Cannot open conversation after coming back from suspend

[PVince81]

Steps to reproduce

1. Open Talk
2. Switch a few times between different active conversations
3. Suspend to RAM
4. Restore
5. Try switching conversations

Expected behaviour

Switch works and joining works (the participant/active state)

Actual behaviour

The chat view switches but the new message form is stuck on "Joining conversation..."
I remember having a quick glance at the network console and I saw a of of 412 precondition failed from the "lookIntoFuture" calls, probably because the joining process failed for some reason.
Might be related to the "offline mode" handling.

Talk app

Talk app version: the one from c.nc.com

• TODO: retry to gather more details from network console.
• TODO: check if a regression, as we touched the message fetching code recently

[nickvergessen]

Sounds familiar ( nextcloud/notifications#1030 )

[no-response]

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