Room timelines can sometimes get stuck

[Kimiblock]

Steps to reproduce

1. Open the app
2. Navigate for a while
3. Send a message and realize the timeline has been frozen

Outcome

What did you expect?

Working timeline

What happened instead?

Frozen timeline

Your phone model

iPhone 13

Operating system version

iOS 17

Application version

Version: 1.6.8 (107)

Homeserver

moechat.kimiblock.top Synapse 1.110.0rc1

Will you send logs?

Yes

[Kimiblock]

Here’s a video

RPReplay_Final1718122957.mov

[stefanceriu]

Most likely cause by matrix-org/matrix-rust-sdk#3501, can you please check on the newly released 1.6.9?

[Kimiblock]

Indeed better, though slowdowns when opening the room still happens

…

-- Sincerely, Kimiblock

[stefanceriu]

Thanks for checking. Loading initial items on opening rooms has been addressed here and deadlocks have been fixed so I will close this issue.

[Kimiblock]

Thanks for checking. Loading initial items on opening rooms has been addressed here and deadlocks have been fixed so I will close this issue.

Is that a dead link?

[stefanceriu]

Oh sorry, I had a typo, edited now.

[Kimiblock]

RPReplay_Final1718812948.mp4

It still occurs to me, 1.6.11

Maybe I should reopen this

[mblackshaw]

We're seeing this super often on 1.6.9 too.

[pixlwave]

RPReplay_Final1718812948.mp4

It still occurs to me, 1.6.11

Maybe I should reopen this

In this video, if you were to have waited longer would the message have appeared in the timeline? If that's true, next it this happens could you add a screenshot which includes the scroll bar?

I believe this might be an instance of the timeline having far too many items loaded (given how long it takes to open the room again) so simply being slow. One trigger for this was fixed in #2969 although there's still another potential way this can happen (albeit more slowly).

[Kimiblock]

Will try. I’m a little sick recently.

…

-- Sincerely, Kimiblock

[mblackshaw]

FWIW this has been much better with 1.6.11. I don't think I've seen it once.

[Kimiblock]

Seen this again