Top left incorrectly displays room specific avatars

The personal avatar that is displayed in the top left left corner next to "Direct Messages" and in the hamburger menu sometimes displays room specific avatars.

Steps to reproduce:

1. Set a room specific personal avatar with /myroomavatar on Element-Web.
2. Send a message in a room in that room.
3. The top-left will often now display the room specific avatar.

Clearing the cache seems to sometimes cause the avatar to revert to the account-wide version and it will sometimes revert on its own.