diff --git a/src/components/structures/MessagePanel.tsx b/src/components/structures/MessagePanel.tsx
index 46604236787..6a204775dc0 100644
--- a/src/components/structures/MessagePanel.tsx
+++ b/src/components/structures/MessagePanel.tsx
@@ -196,6 +196,7 @@ interface IReadReceiptForUser {
 @replaceableComponent("structures.MessagePanel")
 export default class MessagePanel extends React.Component<IProps, IState> {
     static contextType = RoomContext;
+    public context!: React.ContextType<typeof RoomContext>;
 
     // opaque readreceipt info for each userId; used by ReadReceiptMarker
     // to manage its animations
@@ -787,6 +788,7 @@ export default class MessagePanel extends React.Component<IProps, IState> {
                     showReadReceipts={this.props.showReadReceipts}
                     callEventGrouper={callEventGrouper}
                     hideSender={this.membersCount <= 2 && this.props.layout === Layout.Bubble}
+                    timelineRenderingType={this.context.timelineRenderingType}
                 />
             </TileErrorBoundary>,
         );
diff --git a/src/components/structures/RoomView.tsx b/src/components/structures/RoomView.tsx
index 6338ce0c60f..33fde6e5098 100644
--- a/src/components/structures/RoomView.tsx
+++ b/src/components/structures/RoomView.tsx
@@ -94,6 +94,7 @@ import { logger } from "matrix-js-sdk/src/logger";
 import { EventTimeline } from 'matrix-js-sdk/src/models/event-timeline';
 import { dispatchShowThreadEvent } from '../../dispatcher/dispatch-actions/threads';
 import { fetchInitialEvent } from "../../utils/EventUtils";
+import { ComposerType } from "../../dispatcher/payloads/ComposerInsertPayload";
 
 const DEBUG = false;
 let debuglog = function(msg: string) {};
@@ -864,10 +865,11 @@ export class RoomView extends React.Component<IRoomProps, IRoomState> {
             }
 
             case Action.ComposerInsert: {
+                if (payload.composerType) break;
                 // re-dispatch to the correct composer
                 dis.dispatch({
                     ...payload,
-                    action: this.state.editState ? "edit_composer_insert" : "send_composer_insert",
+                    composerType: this.state.editState ? ComposerType.Edit : ComposerType.Send,
                 });
                 break;
             }
diff --git a/src/components/views/messages/TextualBody.tsx b/src/components/views/messages/TextualBody.tsx
index b8e068ed75c..66a5cc8b544 100644
--- a/src/components/views/messages/TextualBody.tsx
+++ b/src/components/views/messages/TextualBody.tsx
@@ -44,6 +44,7 @@ import MessageEditHistoryDialog from "../dialogs/MessageEditHistoryDialog";
 import EditMessageComposer from '../rooms/EditMessageComposer';
 import LinkPreviewGroup from '../rooms/LinkPreviewGroup';
 import { IBodyProps } from "./IBodyProps";
+import RoomContext from "../../../contexts/RoomContext";
 
 const MAX_HIGHLIGHT_LENGTH = 4096;
 
@@ -62,6 +63,9 @@ export default class TextualBody extends React.Component<IBodyProps, IState> {
     private unmounted = false;
     private pills: Element[] = [];
 
+    static contextType = RoomContext;
+    public context!: React.ContextType<typeof RoomContext>;
+
     constructor(props) {
         super(props);
 
@@ -406,6 +410,7 @@ export default class TextualBody extends React.Component<IBodyProps, IState> {
         dis.dispatch<ComposerInsertPayload>({
             action: Action.ComposerInsert,
             userId: mxEvent.getSender(),
+            timelineRenderingType: this.context.timelineRenderingType,
         });
     };
 
diff --git a/src/components/views/right_panel/UserInfo.tsx b/src/components/views/right_panel/UserInfo.tsx
index 195cf03af45..7b16fe38788 100644
--- a/src/components/views/right_panel/UserInfo.tsx
+++ b/src/components/views/right_panel/UserInfo.tsx
@@ -76,6 +76,7 @@ import { bulkSpaceBehaviour } from "../../../utils/space";
 import { logger } from "matrix-js-sdk/src/logger";
 import { shouldShowComponent } from "../../../customisations/helpers/UIComponents";
 import { UIComponent } from "../../../settings/UIFeature";
+import { TimelineRenderingType } from "../../../contexts/RoomContext";
 
 export interface IDevice {
     deviceId: string;
@@ -378,6 +379,7 @@ const UserOptionsSection: React.FC<{
                 dis.dispatch<ComposerInsertPayload>({
                     action: Action.ComposerInsert,
                     userId: member.userId,
+                    timelineRenderingType: TimelineRenderingType.Room,
                 });
             };
 
diff --git a/src/components/views/rooms/EditMessageComposer.tsx b/src/components/views/rooms/EditMessageComposer.tsx
index 1e0a3677720..8fd54a6a7fb 100644
--- a/src/components/views/rooms/EditMessageComposer.tsx
+++ b/src/components/views/rooms/EditMessageComposer.tsx
@@ -47,6 +47,7 @@ import SettingsStore from "../../../settings/SettingsStore";
 import { logger } from "matrix-js-sdk/src/logger";
 import { withMatrixClientHOC, MatrixClientProps } from '../../../contexts/MatrixClientContext';
 import RoomContext from '../../../contexts/RoomContext';
+import { ComposerType } from "../../../dispatcher/payloads/ComposerInsertPayload";
 
 function getHtmlReplyFallback(mxEvent: MatrixEvent): string {
     const html = mxEvent.getContent().formatted_body;
@@ -499,7 +500,12 @@ class EditMessageComposer extends React.Component<IEditMessageComposerProps, ISt
     };
 
     private onAction = (payload: ActionPayload) => {
-        if (payload.action === "edit_composer_insert" && this.editorRef.current) {
+        if (!this.editorRef.current) return;
+
+        if (payload.action === Action.ComposerInsert) {
+            if (payload.timelineRenderingType !== this.context.timelineRenderingType) return;
+            if (payload.composerType !== ComposerType.Edit) return;
+
             if (payload.userId) {
                 this.editorRef.current?.insertMention(payload.userId);
             } else if (payload.event) {
@@ -507,7 +513,7 @@ class EditMessageComposer extends React.Component<IEditMessageComposerProps, ISt
             } else if (payload.text) {
                 this.editorRef.current?.insertPlaintext(payload.text);
             }
-        } else if (payload.action === Action.FocusEditMessageComposer && this.editorRef.current) {
+        } else if (payload.action === Action.FocusEditMessageComposer) {
             this.editorRef.current.focus();
         }
     };
diff --git a/src/components/views/rooms/EventTile.tsx b/src/components/views/rooms/EventTile.tsx
index 26b25699c04..8f9915132e8 100644
--- a/src/components/views/rooms/EventTile.tsx
+++ b/src/components/views/rooms/EventTile.tsx
@@ -62,6 +62,7 @@ import { dispatchShowThreadEvent } from '../../../dispatcher/dispatch-actions/th
 import { MessagePreviewStore } from '../../../stores/room-list/MessagePreviewStore';
 
 import { logger } from "matrix-js-sdk/src/logger";
+import { TimelineRenderingType } from "../../../contexts/RoomContext";
 
 const eventTileTypes = {
     [EventType.RoomMessage]: 'messages.MessageEvent',
@@ -313,6 +314,8 @@ interface IProps {
 
     // whether or not to display thread info
     showThreadInfo?: boolean;
+
+    timelineRenderingType?: TimelineRenderingType;
 }
 
 interface IState {
@@ -855,10 +858,11 @@ export default class EventTile extends React.Component<IProps, IState> {
     }
 
     onSenderProfileClick = () => {
-        const mxEvent = this.props.mxEvent;
+        if (!this.props.timelineRenderingType) return;
         dis.dispatch<ComposerInsertPayload>({
             action: Action.ComposerInsert,
-            userId: mxEvent.getSender(),
+            userId: this.props.mxEvent.getSender(),
+            timelineRenderingType: this.props.timelineRenderingType,
         });
     };
 
@@ -1091,7 +1095,7 @@ export default class EventTile extends React.Component<IProps, IState> {
         }
 
         if (needsSenderProfile && this.props.hideSender !== true) {
-            if (!this.props.tileShape) {
+            if (!this.props.tileShape || this.props.tileShape === TileShape.Thread) {
                 sender = <SenderProfile onClick={this.onSenderProfileClick}
                     mxEvent={this.props.mxEvent}
                     enableFlair={this.props.enableFlair}
diff --git a/src/components/views/rooms/MessageComposer.tsx b/src/components/views/rooms/MessageComposer.tsx
index 79f613b9965..fbbecb8a2e2 100644
--- a/src/components/views/rooms/MessageComposer.tsx
+++ b/src/components/views/rooms/MessageComposer.tsx
@@ -252,7 +252,8 @@ export default class MessageComposer extends React.Component<IProps, IState> {
     private ref: React.RefObject<HTMLDivElement> = createRef();
     private instanceId: number;
 
-    public static contextType = RoomContext;
+    static contextType = RoomContext;
+    public context!: React.ContextType<typeof RoomContext>;
 
     static defaultProps = {
         compact: false,
@@ -398,13 +399,14 @@ export default class MessageComposer extends React.Component<IProps, IState> {
         }
     };
 
-    private addEmoji(emoji: string): boolean {
+    private addEmoji = (emoji: string): boolean => {
         dis.dispatch<ComposerInsertPayload>({
             action: Action.ComposerInsert,
             text: emoji,
+            timelineRenderingType: this.context.timelineRenderingType,
         });
         return true;
-    }
+    };
 
     private sendMessage = async () => {
         if (this.state.haveRecording && this.voiceRecordingButton.current) {
diff --git a/src/components/views/rooms/SendMessageComposer.tsx b/src/components/views/rooms/SendMessageComposer.tsx
index c32a31f2494..35bc85ba235 100644
--- a/src/components/views/rooms/SendMessageComposer.tsx
+++ b/src/components/views/rooms/SendMessageComposer.tsx
@@ -58,6 +58,7 @@ import { ActionPayload } from "../../../dispatcher/payloads";
 import { decorateStartSendingTime, sendRoundTripMetric } from "../../../sendTimePerformanceMetrics";
 import RoomContext from '../../../contexts/RoomContext';
 import DocumentPosition from "../../../editor/position";
+import { ComposerType } from "../../../dispatcher/payloads/ComposerInsertPayload";
 
 function addReplyToMessageContent(
     content: IContent,
@@ -591,7 +592,10 @@ export class SendMessageComposer extends React.Component<ISendMessageComposerPro
                     this.editorRef.current?.focus();
                 }
                 break;
-            case "send_composer_insert":
+            case Action.ComposerInsert:
+                if (payload.timelineRenderingType !== this.context.timelineRenderingType) break;
+                if (payload.composerType !== ComposerType.Send) break;
+
                 if (payload.userId) {
                     this.editorRef.current?.insertMention(payload.userId);
                 } else if (payload.event) {
diff --git a/src/dispatcher/payloads/ComposerInsertPayload.ts b/src/dispatcher/payloads/ComposerInsertPayload.ts
index ea5d8a0c53b..e5aab51a215 100644
--- a/src/dispatcher/payloads/ComposerInsertPayload.ts
+++ b/src/dispatcher/payloads/ComposerInsertPayload.ts
@@ -18,9 +18,17 @@ import { MatrixEvent } from "matrix-js-sdk/src/models/event";
 
 import { ActionPayload } from "../payloads";
 import { Action } from "../actions";
+import { TimelineRenderingType } from "../../contexts/RoomContext";
+
+export enum ComposerType {
+    Send = "send",
+    Edit = "edit",
+}
 
 interface IBaseComposerInsertPayload extends ActionPayload {
     action: Action.ComposerInsert;
+    timelineRenderingType: TimelineRenderingType;
+    composerType?: ComposerType; // falsey if should be re-dispatched to the correct composer
 }
 
 interface IComposerInsertMentionPayload extends IBaseComposerInsertPayload {