diff --git a/lib/shared/typeahead-utils.js b/lib/shared/typeahead-utils.js
--- a/lib/shared/typeahead-utils.js
+++ b/lib/shared/typeahead-utils.js
@@ -10,6 +10,11 @@
   +usernamePrefix: string,
 };
 
+export type Selection = {
+  +start: number,
+  +end: number,
+};
+
 function getTypeaheadUserSuggestions(
   userSearchIndex: SearchIndex,
   threadMembers: $ReadOnlyArray<RelativeMemberInfo>,
diff --git a/native/chat/chat-input-bar.react.js b/native/chat/chat-input-bar.react.js
--- a/native/chat/chat-input-bar.react.js
+++ b/native/chat/chat-input-bar.react.js
@@ -16,6 +16,7 @@
 } from 'react-native';
 import { TextInputKeyboardMangerIOS } from 'react-native-keyboard-input';
 import Animated, { EasingNode } from 'react-native-reanimated';
+import type { SelectionChangeEvent } from 'react-native/Libraries/Components/TextInput/TextInput';
 import { useDispatch } from 'react-redux';
 
 import {
@@ -43,6 +44,7 @@
   draftKeyFromThreadID,
   colorIsDark,
 } from 'lib/shared/thread-utils';
+import type { Selection } from 'lib/shared/typeahead-utils';
 import type { CalendarQuery } from 'lib/types/entry-types';
 import type { LoadingStatus } from 'lib/types/loading-types';
 import type { PhotoPaste } from 'lib/types/media-types';
@@ -144,10 +146,13 @@
   +userSearchIndex: SearchIndex,
   +threadMembers: $ReadOnlyArray<RelativeMemberInfo>,
 };
+
 type State = {
   +text: string,
   +textEdited: boolean,
   +buttonsExpanded: boolean,
+  +selection: Selection,
+  +controlSelection: boolean,
 };
 class ChatInputBar extends React.PureComponent<Props, State> {
   textInput: ?React.ElementRef<typeof TextInput>;
@@ -164,16 +169,50 @@
   targetSendButtonContainerOpen: Value;
   sendButtonContainerStyle: AnimatedViewStyle;
 
+  // Refs are needed for hacks used to display typeahead properly.
+  // We had a problem with the typeahead flickering when
+  // the typeahead was already visible and user was typing
+  // another character (e.g. @a was typed and the user adds another letter)
+
+  // There are two events coming from TextInput: text change
+  // and selection change events.
+  // A rerender was triggered after both of them.
+  // That caused a situation in which text and selection state were
+  // out of sync, e.g. text state was already updated, but selection was not.
+  // That caused flickering of typeahead, because regex wasn't matched
+  // after the first event.
+
+  // Another gimmick is those events come in different order
+  // based on platform. Selection change event happens first on iOS
+  // and text change event happens first on Android. That is the reason
+  // we need separate refs for two platforms.
+
+  // Workaround:
+  // Because an order of events is different, we can't use the previous
+  // method. Setting flag on text change and then setting state
+  // on selection change caused extra events being emitted from native
+  // side. It was probably a reaction to setting text state and trying to
+  // control component. I used a different approach. We perform two rerenders
+  // but use androidPreviousText when creating typeahead.
+  // This way, already updated text is not processed along with old selection
+  // We set it to null, when new selection is set.
+  androidPreviousText: ?string;
+  iosPreviousSelection: ?Selection;
+
   constructor(props: Props) {
     super(props);
     this.state = {
       text: props.draft,
       textEdited: false,
       buttonsExpanded: true,
+      selection: { start: 0, end: 0 },
+      controlSelection: false,
     };
 
     this.setUpActionIconAnimations();
     this.setUpSendIconAnimations();
+    this.androidPreviousText = null;
+    this.iosPreviousSelection = null;
   }
 
   setUpActionIconAnimations() {
@@ -568,6 +607,10 @@
             allowImagePasteForThreadID={this.props.threadInfo.id}
             value={this.state.text}
             onChangeText={this.updateText}
+            selection={
+              this.state.controlSelection ? this.state.selection : undefined
+            }
+            onSelectionChange={this.updateSelection}
             placeholder="Send a message..."
             placeholderTextColor={this.props.colors.listInputButton}
             multiline={true}
@@ -605,10 +648,35 @@
   };
 
   updateText = (text: string) => {
-    this.setState({ text, textEdited: true });
+    if (Platform.OS === 'android') {
+      this.androidPreviousText = this.state.text;
+    }
+    if (Platform.OS === 'ios') {
+      this.iosPreviousSelection = null;
+    }
+
+    this.setState({ text, textEdited: true, controlSelection: false });
     this.saveDraft(text);
   };
 
+  updateSelection: (event: SelectionChangeEvent) => void = event => {
+    if (Platform.OS === 'android') {
+      this.androidPreviousText = null;
+    }
+    if (Platform.OS === 'ios') {
+      this.iosPreviousSelection = this.state.selection;
+    }
+
+    // we introduced controlSelection state to avoid flickering of selection
+    // it is workaround that allow as only control selection in concrete
+    // situations, like clicking into typeahead button
+    // in other situations it is handled by native side, and we don't control it
+    this.setState({
+      selection: event.nativeEvent.selection,
+      controlSelection: false,
+    });
+  };
+
   saveDraft = _throttle(text => {
     this.props.dispatch({
       type: updateDraftActionType,
diff --git a/native/components/clearable-text-input.js b/native/components/clearable-text-input.js
--- a/native/components/clearable-text-input.js
+++ b/native/components/clearable-text-input.js
@@ -6,7 +6,7 @@
 type TextInputProps = React.ElementConfig<typeof BaseTextInput>;
 export type ClearableTextInputProps = {
   ...TextInputProps,
-  textInputRef: (textInput: ?React.ElementRef<typeof BaseTextInput>) => mixed,
-  onChangeText: $NonMaybeType<$PropertyType<TextInputProps, 'onChangeText'>>,
-  value: $NonMaybeType<$PropertyType<TextInputProps, 'value'>>,
+  +textInputRef: (textInput: ?React.ElementRef<typeof BaseTextInput>) => mixed,
+  +onChangeText: $NonMaybeType<$PropertyType<TextInputProps, 'onChangeText'>>,
+  +value: $NonMaybeType<$PropertyType<TextInputProps, 'value'>>,
 };
diff --git a/native/components/clearable-text-input.react.ios.js b/native/components/clearable-text-input.react.ios.js
--- a/native/components/clearable-text-input.react.ios.js
+++ b/native/components/clearable-text-input.react.ios.js
@@ -154,6 +154,7 @@
           {...props}
           style={[props.style, styles.invisibleTextInput]}
           onChangeText={this.onOldInputChangeText}
+          onSelectionChange={this.props.onSelectionChange}
           onKeyPress={this.onOldInputKeyPress}
           onBlur={this.onOldInputBlur}
           onFocus={this.onOldInputFocus}
@@ -167,6 +168,7 @@
         onFocus={this.onFocus}
         onBlur={this.onBlur}
         onChangeText={this.props.onChangeText}
+        onSelectionChange={this.props.onSelectionChange}
         key={this.state.textInputKey}
         ref={this.textInputRef}
       />,
diff --git a/native/components/clearable-text-input.react.js b/native/components/clearable-text-input.react.js
--- a/native/components/clearable-text-input.react.js
+++ b/native/components/clearable-text-input.react.js
@@ -60,6 +60,7 @@
         <TextInput
           {...props}
           onChangeText={this.onChangeText}
+          onSelectionChange={this.props.onSelectionChange}
           ref={this.textInputRef}
         />
       </View>