diff --git a/src/app/features/room/RoomTimeline.tsx b/src/app/features/room/RoomTimeline.tsx
index 25061dac..d1678b65 100644
--- a/src/app/features/room/RoomTimeline.tsx
+++ b/src/app/features/room/RoomTimeline.tsx
@@ -1048,7 +1048,7 @@ export function RoomTimeline({ room, eventId, roomInputRef, editor }: RoomTimeli
             collapse={collapse}
             highlight={highlighted}
             edit={editId === mEventId}
-            canDelete={canRedact || canDeleteOwn}
+            canDelete={canRedact || (canDeleteOwn && mEvent.getSender() === mx.getUserId())}
             canSendReaction={canSendReaction}
             canPinEvent={canPinEvent}
             imagePackRooms={imagePackRooms}
@@ -1130,7 +1130,7 @@ export function RoomTimeline({ room, eventId, roomInputRef, editor }: RoomTimeli
             collapse={collapse}
             highlight={highlighted}
             edit={editId === mEventId}
-            canDelete={canRedact || canDeleteOwn}
+            canDelete={canRedact || (canDeleteOwn && mEvent.getSender() === mx.getUserId())}
             canSendReaction={canSendReaction}
             canPinEvent={canPinEvent}
             imagePackRooms={imagePackRooms}
@@ -1248,7 +1248,7 @@ export function RoomTimeline({ room, eventId, roomInputRef, editor }: RoomTimeli
             messageLayout={messageLayout}
             collapse={collapse}
             highlight={highlighted}
-            canDelete={canRedact || canDeleteOwn}
+            canDelete={canRedact || (canDeleteOwn && mEvent.getSender() === mx.getUserId())}
             canSendReaction={canSendReaction}
             canPinEvent={canPinEvent}
             imagePackRooms={imagePackRooms}
diff --git a/src/app/utils/room.ts b/src/app/utils/room.ts
index 9feed835..c084c00e 100644
--- a/src/app/utils/room.ts
+++ b/src/app/utils/room.ts
@@ -160,7 +160,8 @@ export const getOrphanParents = (roomToParents: RoomToParents, roomId: string):
 };
 
 export const isMutedRule = (rule: IPushRule) =>
-  rule.actions[0] === 'dont_notify' && rule.conditions?.[0]?.kind === 'event_match';
+  // Check for empty actions (new spec) or dont_notify (deprecated)
+  (rule.actions.length === 0 || rule.actions[0] === 'dont_notify') && rule.conditions?.[0]?.kind === 'event_match';
 
 export const findMutedRule = (overrideRules: IPushRule[], roomId: string) =>
   overrideRules.find((rule) => rule.rule_id === roomId && isMutedRule(rule));