Rooms with missing m.room.create events now show up as 'known vulnerability' room version warnings :/

[ara4n]

This can happen when your HS's state for the room gets lost and it syncs empty state, but the resulting warning is scary & confusing.

[ushacow]

Hi! Could you tell how to get rid of such rooms? What should I delete from database?

[ara4n]

The problem is that the room is fine in the database, it's just the client which has been misled. To fix it, clear the cache on the client.

[ushacow]

Thanks for your help! Do you mean the button in Settings -> Clear Cache and Reload in Riot-web? I've tried that one, but it didn't remove Empty rooms with 'known vulnerability' message in my client. I think it is some other situation. These Empty rooms appeared after upgrade riot-web from v0.15.3 to the last v0.16.4

[turt2live]

This is particularly bad when joining a room for the first time: the power levels and create event both haven't made it to the client yet, so riot appears to assume it should show the warning to "room administrators only" of which I (in my case) am definitely not one. Should probably fail a bit safer towards not showing the warning.

[lampholder]

Does this strike every room which the joiner doesn't have perms to view history?

I'm going to abuse critical here to indicate how urgently I think this needs to be fixed, it is super alarming :\