diff --git a/web/calendar/entry.react.js b/web/calendar/entry.react.js
index 0df341f68..244709834 100644
--- a/web/calendar/entry.react.js
+++ b/web/calendar/entry.react.js
@@ -1,551 +1,554 @@
 // @flow
 
 import classNames from 'classnames';
 import invariant from 'invariant';
 import * as React from 'react';
 
 import {
   createEntryActionTypes,
   useCreateEntry,
   saveEntryActionTypes,
   useSaveEntry,
   deleteEntryActionTypes,
   useDeleteEntry,
   concurrentModificationResetActionType,
   type UseCreateEntryInput,
   type UseSaveEntryInput,
   type UseDeleteEntryInput,
 } from 'lib/actions/entry-actions.js';
 import {
   type PushModal,
   useModalContext,
 } from 'lib/components/modal-provider.react.js';
 import { extractKeyserverIDFromIDOptional } from 'lib/keyserver-conn/keyserver-call-utils.js';
 import { connectionSelector } from 'lib/selectors/keyserver-selectors.js';
 import { threadInfoSelector } from 'lib/selectors/thread-selectors.js';
 import { colorIsDark } from 'lib/shared/color-utils.js';
 import { entryKey } from 'lib/shared/entry-utils.js';
 import { useThreadHasPermission } from 'lib/shared/thread-utils.js';
 import {
   type EntryInfo,
   type SaveEntryResult,
   type SaveEntryPayload,
   type CreateEntryPayload,
   type DeleteEntryResult,
   type CalendarQuery,
 } from 'lib/types/entry-types.js';
 import type { LoadingStatus } from 'lib/types/loading-types.js';
 import type { ResolvedThreadInfo } from 'lib/types/minimally-encoded-thread-permissions-types.js';
 import type { Dispatch } from 'lib/types/redux-types.js';
 import { threadPermissions } from 'lib/types/thread-permission-types.js';
 import { threadTypeIsThick } from 'lib/types/thread-types-enum.js';
 import { dateString } from 'lib/utils/date-utils.js';
 import { useResolvedThreadInfo } from 'lib/utils/entity-helpers.js';
 import { ServerError } from 'lib/utils/errors.js';
 import {
   useDispatchActionPromise,
   type DispatchActionPromise,
 } from 'lib/utils/redux-promise-utils.js';
 import { useDispatch } from 'lib/utils/redux-utils.js';
 
 import css from './calendar.css';
 import LoadingIndicator from '../loading-indicator.react.js';
 import LogInFirstModal from '../modals/account/log-in-first-modal.react.js';
 import ConcurrentModificationModal from '../modals/concurrent-modification-modal.react.js';
 import HistoryModal from '../modals/history/history-modal.react.js';
 import { useSelector } from '../redux/redux-utils.js';
 import { nonThreadCalendarQuery } from '../selectors/nav-selectors.js';
 import { HistoryVector, DeleteVector } from '../vectors.react.js';
 
 type BaseProps = {
   +innerRef: (key: string, me: Entry) => void,
   +entryInfo: EntryInfo,
   +focusOnFirstEntryNewerThan: (time: number) => void,
   +tabIndex: number,
 };
 type Props = {
   ...BaseProps,
   +threadInfo: ResolvedThreadInfo,
   +loggedIn: boolean,
   +currentUserCanEditEntry: boolean,
   +calendarQuery: () => CalendarQuery,
   +online: boolean,
   +dispatch: Dispatch,
   +dispatchActionPromise: DispatchActionPromise,
   +createEntry: (input: UseCreateEntryInput) => Promise<CreateEntryPayload>,
   +saveEntry: (input: UseSaveEntryInput) => Promise<SaveEntryResult>,
   +deleteEntry: (input: UseDeleteEntryInput) => Promise<DeleteEntryResult>,
   +pushModal: PushModal,
   +popModal: () => void,
 };
 type State = {
   +focused: boolean,
   +loadingStatus: LoadingStatus,
   +text: string,
 };
 class Entry extends React.PureComponent<Props, State> {
   textarea: ?HTMLTextAreaElement;
   creating: boolean;
   needsUpdateAfterCreation: boolean;
   needsDeleteAfterCreation: boolean;
   nextSaveAttemptIndex: number;
   mounted: boolean;
   currentlySaving: ?string;
 
   constructor(props: Props) {
     super(props);
     this.state = {
       focused: false,
       loadingStatus: 'inactive',
       text: props.entryInfo.text,
     };
     this.creating = false;
     this.needsUpdateAfterCreation = false;
     this.needsDeleteAfterCreation = false;
     this.nextSaveAttemptIndex = 0;
   }
 
   guardedSetState(input: Partial<State>) {
     if (this.mounted) {
       this.setState(input);
     }
   }
 
   componentDidMount() {
     this.mounted = true;
     this.props.innerRef(entryKey(this.props.entryInfo), this);
     this.updateHeight();
     // Whenever a new Entry is created, focus on it
     if (!this.props.entryInfo.id) {
       this.focus();
     }
   }
 
   componentDidUpdate(prevProps: Props) {
     if (
       !this.state.focused &&
       this.props.entryInfo.text !== this.state.text &&
       this.props.entryInfo.text !== prevProps.entryInfo.text
     ) {
       this.setState({ text: this.props.entryInfo.text });
       this.currentlySaving = null;
     }
 
     if (
       this.props.online &&
       !prevProps.online &&
       this.state.loadingStatus === 'error'
     ) {
       this.save();
     }
   }
 
   focus() {
     invariant(
       this.textarea instanceof HTMLTextAreaElement,
       'textarea ref not set',
     );
     this.textarea.focus();
   }
 
   onMouseDown: (event: SyntheticEvent<HTMLDivElement>) => void = event => {
     if (this.state.focused && event.target !== this.textarea) {
       // Don't lose focus when some non-textarea part is clicked
       event.preventDefault();
     }
   };
 
   componentWillUnmount() {
     this.mounted = false;
   }
 
   updateHeight: () => void = () => {
     invariant(
       this.textarea instanceof HTMLTextAreaElement,
       'textarea ref not set',
     );
     this.textarea.style.height = 'auto';
     this.textarea.style.height = this.textarea.scrollHeight + 'px';
   };
 
   render(): React.Node {
     let actionLinks = null;
     if (this.state.focused) {
       let historyButton = null;
-      if (this.props.entryInfo.id) {
+      if (
+        this.props.entryInfo.id &&
+        !threadTypeIsThick(this.props.threadInfo.type)
+      ) {
         historyButton = (
           <a href="#" onClick={this.onHistory}>
             <HistoryVector className={css.history} />
             <span className={css.actionLinksText}>History</span>
           </a>
         );
       }
       const rightActionLinksClassName = `${css.rightActionLinks} ${css.actionLinksText}`;
       actionLinks = (
         <div className={css.actionLinks}>
           <a href="#" onClick={this.onDelete}>
             <DeleteVector />
             <span className={css.actionLinksText}>Delete</span>
           </a>
           {historyButton}
           <span className={rightActionLinksClassName}>
             {this.props.threadInfo.uiName}
           </span>
           <div className={css.clear}></div>
         </div>
       );
     }
 
     const darkColor = colorIsDark(this.props.threadInfo.color);
     const entryClasses = classNames({
       [css.entry]: true,
       [css.darkEntry]: darkColor,
       [css.focusedEntry]: this.state.focused,
     });
     const style = { backgroundColor: `#${this.props.threadInfo.color}` };
     const loadingIndicatorColor = darkColor ? 'white' : 'black';
     return (
       <div
         className={entryClasses}
         style={style}
         onMouseDown={this.onMouseDown}
       >
         <textarea
           rows="1"
           className={css.entryText}
           onChange={this.onChange}
           onKeyDown={this.onKeyDown}
           value={this.state.text}
           onFocus={this.onFocus}
           onBlur={this.onBlur}
           tabIndex={this.props.tabIndex}
           ref={this.textareaRef}
           disabled={!this.props.currentUserCanEditEntry}
         />
         <LoadingIndicator
           status={this.state.loadingStatus}
           color={loadingIndicatorColor}
           loadingClassName={css.entryLoading}
           errorClassName={css.entryError}
         />
         {actionLinks}
       </div>
     );
   }
 
   textareaRef: (textarea: ?HTMLTextAreaElement) => void = textarea => {
     this.textarea = textarea;
   };
 
   onFocus: () => void = () => {
     if (!this.state.focused) {
       this.setState({ focused: true });
     }
   };
 
   onBlur: () => void = () => {
     this.setState({ focused: false });
     if (this.state.text.trim() === '') {
       this.delete();
     } else if (this.props.entryInfo.text !== this.state.text) {
       this.save();
     }
   };
 
   delete() {
     this.dispatchDelete(this.props.entryInfo.id, false);
   }
 
   save() {
     this.dispatchSave(this.props.entryInfo.id, this.state.text);
   }
 
   onChange: (event: SyntheticEvent<HTMLTextAreaElement>) => void = event => {
     if (!this.props.loggedIn) {
       this.props.pushModal(<LogInFirstModal inOrderTo="edit this calendar" />);
       return;
     }
     const target = event.target;
     invariant(target instanceof HTMLTextAreaElement, 'target not textarea');
     this.setState({ text: target.value }, this.updateHeight);
   };
 
   onKeyDown: (event: SyntheticKeyboardEvent<HTMLTextAreaElement>) => void =
     event => {
       if (event.key === 'Escape') {
         invariant(
           this.textarea instanceof HTMLTextAreaElement,
           'textarea ref not set',
         );
         this.textarea.blur();
       }
     };
 
   dispatchSave(serverID: ?string, newText: string) {
     if (this.currentlySaving === newText) {
       return;
     }
     this.currentlySaving = newText;
 
     if (newText.trim() === '') {
       // We don't save the empty string, since as soon as the element loses
       // focus it'll get deleted
       return;
     }
 
     if (!serverID) {
       if (this.creating) {
         // We need the first save call to return so we know the ID of the entry
         // we're updating, so we'll need to handle this save later
         this.needsUpdateAfterCreation = true;
         return;
       } else {
         this.creating = true;
       }
     }
 
     if (!serverID) {
       void this.props.dispatchActionPromise(
         createEntryActionTypes,
         this.createAction(newText),
       );
     } else {
       void this.props.dispatchActionPromise(
         saveEntryActionTypes,
         this.saveAction(serverID, newText),
       );
     }
   }
 
   async createAction(text: string): Promise<CreateEntryPayload> {
     const localID = this.props.entryInfo.localID;
     invariant(localID, "if there's no serverID, there should be a localID");
     const curSaveAttempt = this.nextSaveAttemptIndex++;
     this.guardedSetState({ loadingStatus: 'loading' });
     try {
       const createEntryInfo = {
         text,
         timestamp: this.props.entryInfo.creationTime,
         date: dateString(
           this.props.entryInfo.year,
           this.props.entryInfo.month,
           this.props.entryInfo.day,
         ),
         threadID: this.props.entryInfo.threadID,
         localID,
         calendarQuery: this.props.calendarQuery(),
       };
 
       const useCreateEntryInput = threadTypeIsThick(this.props.threadInfo.type)
         ? {
             thick: true,
             threadInfo: this.props.threadInfo,
             createEntryInfo,
           }
         : {
             thick: false,
             createEntryInfo,
           };
 
       const response = await this.props.createEntry(useCreateEntryInput);
       if (curSaveAttempt + 1 === this.nextSaveAttemptIndex) {
         this.guardedSetState({ loadingStatus: 'inactive' });
       }
       this.creating = false;
       if (this.needsUpdateAfterCreation) {
         this.needsUpdateAfterCreation = false;
         this.dispatchSave(response.entryID, this.state.text);
       }
       if (this.needsDeleteAfterCreation) {
         this.needsDeleteAfterCreation = false;
         this.dispatchDelete(response.entryID, false);
       }
       return response;
     } catch (e) {
       if (curSaveAttempt + 1 === this.nextSaveAttemptIndex) {
         this.guardedSetState({ loadingStatus: 'error' });
       }
       this.currentlySaving = null;
       this.creating = false;
       throw e;
     }
   }
 
   async saveAction(
     entryID: string,
     newText: string,
   ): Promise<SaveEntryPayload> {
     const curSaveAttempt = this.nextSaveAttemptIndex++;
     this.guardedSetState({ loadingStatus: 'loading' });
     try {
       const saveEntryInfo = {
         entryID,
         text: newText,
         prevText: this.props.entryInfo.text,
         timestamp: Date.now(),
         calendarQuery: this.props.calendarQuery(),
       };
 
       const useSaveEntryInput = threadTypeIsThick(this.props.threadInfo.type)
         ? {
             thick: true,
             threadInfo: this.props.threadInfo,
             saveEntryInfo,
           }
         : {
             thick: false,
             saveEntryInfo,
           };
 
       const response = await this.props.saveEntry(useSaveEntryInput);
       if (curSaveAttempt + 1 === this.nextSaveAttemptIndex) {
         this.guardedSetState({ loadingStatus: 'inactive' });
       }
       return { ...response, threadID: this.props.entryInfo.threadID };
     } catch (e) {
       if (curSaveAttempt + 1 === this.nextSaveAttemptIndex) {
         this.guardedSetState({ loadingStatus: 'error' });
       }
       this.currentlySaving = null;
       if (e instanceof ServerError && e.message === 'concurrent_modification') {
         const onRefresh = () => {
           this.setState({ loadingStatus: 'inactive' }, this.updateHeight);
           this.props.dispatch({
             type: concurrentModificationResetActionType,
             payload: { id: entryID, dbText: e.payload?.db },
           });
           this.props.popModal();
         };
         this.props.pushModal(
           <ConcurrentModificationModal onRefresh={onRefresh} />,
         );
       }
       throw e;
     }
   }
 
   onDelete: (event: SyntheticEvent<HTMLAnchorElement>) => void = event => {
     event.preventDefault();
     if (!this.props.loggedIn) {
       this.props.pushModal(<LogInFirstModal inOrderTo="edit this calendar" />);
       return;
     }
     this.dispatchDelete(this.props.entryInfo.id, true);
   };
 
   dispatchDelete(serverID: ?string, focusOnNextEntry: boolean) {
     const { localID } = this.props.entryInfo;
     void this.props.dispatchActionPromise(
       deleteEntryActionTypes,
       this.deleteAction(serverID, focusOnNextEntry),
       undefined,
       { localID, serverID },
     );
   }
 
   async deleteAction(
     entryID: ?string,
     focusOnNextEntry: boolean,
   ): Promise<?DeleteEntryResult> {
     invariant(
       this.props.loggedIn,
       'user should be logged in if delete triggered',
     );
     if (focusOnNextEntry) {
       this.props.focusOnFirstEntryNewerThan(this.props.entryInfo.creationTime);
     }
     if (entryID) {
       const deleteEntryInfo = {
         entryID,
         prevText: this.props.entryInfo.text,
         calendarQuery: this.props.calendarQuery(),
       };
 
       const useDeleteEntryInput = threadTypeIsThick(this.props.threadInfo.type)
         ? {
             thick: true,
             threadInfo: this.props.threadInfo,
             deleteEntryInfo,
           }
         : {
             thick: false,
             deleteEntryInfo,
           };
 
       return await this.props.deleteEntry(useDeleteEntryInput);
     } else if (this.creating) {
       this.needsDeleteAfterCreation = true;
     }
     return null;
   }
 
   onHistory: (event: SyntheticEvent<HTMLAnchorElement>) => void = event => {
     event.preventDefault();
     this.props.pushModal(
       <HistoryModal
         mode="entry"
         dayString={dateString(
           this.props.entryInfo.year,
           this.props.entryInfo.month,
           this.props.entryInfo.day,
         )}
         currentEntryID={this.props.entryInfo.id}
       />,
     );
   };
 }
 
 export type InnerEntry = Entry;
 
 const ConnectedEntry: React.ComponentType<BaseProps> = React.memo<BaseProps>(
   function ConnectedEntry(props) {
     const { threadID } = props.entryInfo;
     const unresolvedThreadInfo = useSelector(
       state => threadInfoSelector(state)[threadID],
     );
     const threadInfo = useResolvedThreadInfo(unresolvedThreadInfo);
     const loggedIn = useSelector(
       state =>
         !!(state.currentUserInfo && !state.currentUserInfo.anonymous && true),
     );
     const currentUserCanEditEntry = useThreadHasPermission(
       threadInfo,
       threadPermissions.EDIT_ENTRIES,
     );
     const calendarQuery = useSelector(nonThreadCalendarQuery);
     const keyserverID = extractKeyserverIDFromIDOptional(threadID);
     const online = useSelector(state => {
       if (!keyserverID) {
         return true;
       }
       return connectionSelector(keyserverID)(state) === 'connected';
     });
     const callCreateEntry = useCreateEntry();
     const callSaveEntry = useSaveEntry();
     const callDeleteEntry = useDeleteEntry();
     const dispatchActionPromise = useDispatchActionPromise();
     const dispatch = useDispatch();
 
     const modalContext = useModalContext();
 
     return (
       <Entry
         {...props}
         threadInfo={threadInfo}
         loggedIn={loggedIn}
         currentUserCanEditEntry={currentUserCanEditEntry}
         calendarQuery={calendarQuery}
         online={online}
         createEntry={callCreateEntry}
         saveEntry={callSaveEntry}
         deleteEntry={callDeleteEntry}
         dispatchActionPromise={dispatchActionPromise}
         dispatch={dispatch}
         pushModal={modalContext.pushModal}
         popModal={modalContext.popModal}
       />
     );
   },
 );
 
 export default ConnectedEntry;