"Some of your messages have not been sent" doesn't highlight the message when the unsent event doesn't have its own tile

[novocaine]

Description

If an edit, reaction, or other event without its own tile is unsent, Element flags the problem but doesn't show which message has a related event pending.

Steps to reproduce

• An edit (in my case) fails to send
• Reload Element and view the channel

Acceptance criteria: highlight the pending related message somehow.

[t3chguy]

Don't they get a red exclamation mark in the read receipt region and get kept at the bottom end of the timeline?

[novocaine]

If so, there was no visible messaged marked in this way, so possible bug - I will try to repro.

[t3chguy]

Seems like related to #17078 in that case

[novocaine]

I think the issue is that I have an unsent edit, which maybe we don't currently have a way of visualising.

unsentMessages contains an event like

"type": "m.room.encrypted",
    "content": {        
        "m.relates_to": {
            "rel_type": "m.replace",
            "event_id": "..."
        }
    },

I can't see reference to m.replace in the spec so can't confirm for sure.

[novocaine]

Ah, also, retry all doesn't actually clear it - the popup clears, but when I restart Element it comes back. Which sounds a bit like #17078

Deleting the messages .. works

[t3chguy]

Ah yes, unsent edits are only visible in the timeline if you have Show hidden events enabled

I can't see reference to m.replace in the spec so can't confirm for sure.

matrix-org/matrix-spec-proposals#2676

The edit itself is not meant to be visible in the timeline, but only affect the target event

[t3chguy]

ah, also, retry all doesn't actually clear it - the popup clears, but when I restart Element it comes back.

This sounds like a duplicate of #17589 then