Threads aren't fully loaded after reloading the app

[novocaine]

Steps to reproduce

Reload the app in an encrypted room. Threads are incomplete - the list is complete, but they don't contain all the messages and the counts aren't updated.

After sending some messages (complaining about this bug), after about a minute they seem to load

Note that the counts are out of sync; the threads actually contain more messages than the counter.

Outcome

What did you expect?

The thread list should be up to date on load and the counts correct.

What happened instead?

See above

Operating system

OS X

Browser information

Chrome

URL for webapp

develop.element.io

Application version

Element version: 03e776d-react-8ca18ccdec30-js-fab7b7f26ae5 Olm version: 3.2.8

Homeserver

threads-dev.lab.element.dev

Will you send logs?

No

[novocaine]

I can repro this in an encrypted room, but not an unencrypted room

[novocaine]

This is not fixed. Clicking into the individual threads now loads their messages, but until I do that, the message count and last message preview is not loaded.

First load

After clicking into the thread and coming back out

[novocaine]

This seems to have gotten worse - now, when I click into one of the threads, when I go back to the thread list, most of the threads are missing.

(click into hello world and out again)

I'm not sure if this is because there's a bug showing the vscroll or the contents of the list aren't there

[novocaine]

This seems to have gotten worse - now, when I click into one of the threads, when I go back to the thread list, most of the threads are missing.

(click into hello world and out again)

I'm not sure if this is because there's a bug showing the vscroll or the contents of the list aren't there

This behaviour has stopped, it's now back to the behaviour in #20709 (comment)

[novocaine]

The contents have changed, but this is still an issue. This is the contents of the thread panel when I load the room

As you can see it doesn't have all the threads from the previous screenshots. When I scroll up in the main timeline, they populate:

[novocaine]

I've been informed we need to redeploy synapse before testing again, so will wait for that and re-check

[novocaine]

This is still not working but different from before; the oldest threads are shown but not newer (even though the newer are visible in the main timeline). Pagination issue?

thread list (no vscroll)

timeline (threads visible here aren't in the thread list)