diff --git a/web/chat/chat-message-list.react.js b/web/chat/chat-message-list.react.js
--- a/web/chat/chat-message-list.react.js
+++ b/web/chat/chat-message-list.react.js
@@ -39,7 +39,6 @@
 import ChatInputBar from './chat-input-bar.react';
 import css from './chat-message-list.css';
 import { MessageListContext } from './message-list-types';
-import MessageTimestampTooltip from './message-timestamp-tooltip.react';
 import Message from './message.react';
 import type {
   OnMessagePositionWithContainerInfo,
@@ -261,16 +260,6 @@
       [css.activeContainer]: isActive,
     });
 
-    let tooltip;
-    if (this.state.mouseOverMessagePosition) {
-      const messagePositionInfo = this.state.mouseOverMessagePosition;
-      tooltip = (
-        <MessageTimestampTooltip
-          messagePositionInfo={messagePositionInfo}
-          timeZone={this.props.timeZone}
-        />
-      );
-    }
     let relationshipPrompt;
     if (this.props.threadInfo) {
       relationshipPrompt = (
@@ -290,7 +279,6 @@
           <div className={messageContainerStyle} ref={this.messageContainerRef}>
             {messages}
           </div>
-          {tooltip}
         </div>
         <ChatInputBar threadInfo={threadInfo} inputState={inputState} />
       </div>,