"Delete all" and "Retry all" buttons on "some of your messages have not been sent" doesn't work.

[ara4n]

The 'delete all' button does nothing; nothing in logs. (Also, I don't recall the 'stuck' message actually failing to send at the time :/)

[ara4n]

...and then I can't send messages in that room at all:

TimelinePanel.js?0670:1214 Uncaught (in promise) TypeError: Cannot read property 'getStateKey' of undefined
    at TimelinePanel._checkForPreJoinUISI (TimelinePanel.js?0670:1214)
    at TimelinePanel._getEvents (TimelinePanel.js?0670:1138)
    at TimelinePanel._reloadEvents (TimelinePanel.js?0670:1132)
    at MatrixClient.eval (TimelinePanel.js?0670:592)
    at MatrixClient.emit (events.js?faa1:158)
    at Room.forSource (ReEmitter.ts?7714:45)
    at Room.emit (events.js?faa1:153)
    at Room.addPendingEvent (room.js?6146:1312)
    at MatrixClient._sendCompleteEvent (client.js?2444:2857)
    at MatrixClient.sendEvent (client.js?2444:2801)

[jryans]

Not sure of the best workaround off hand... Let's check with @turt2live when awake.

[turt2live]

As mentioned internally, it would be good to know what the events are to help identify the failure mode here. Logs would also be useful as they might not show anything on the button clicks, but can at least help reveal how the UI ended up in this state.

[kittykat]

I get this occasionally: usually closing the tab and reopening the app fixes the issue

[erebion]

I also notice that every now and then and I can't find a reason for that. So far my workaround was starting a new conversation, but that's a bit annoying.

[t3chguy]

Fixed by matrix-org/matrix-react-sdk#12464 which removes the checkForPreJoinUISI code