Opening a permalink to a message in a thread then entering a different room complains about a missing message

[justjanne]

Steps to reproduce

1. Enter Room A. Room A contains no threads. Room A contains a permalink to a message in a thread of Room B.
   
2. Click on the link. Room B opens. The thread panel of Room B opens and scrolls to the message.
   
3. Switch back to Room A
   

Outcome

What did you expect?

Either the thread panel closes or the thread panel shows an empty UI.

What happened instead?

Element Web shows a dialog containing the following message:

Failed to load timeline position: Tried to load a specific point in this room's timeline, but was unable to find it.

(This does not happen every time, but almost every second time)

Operating system

Ubuntu 21.10 (impish)

Browser information

Firefox 98.0.2 (64-bit)

URL for webapp

develop.element.io

Application version

Element version: cec31d0-react-f648140d0c72-js-286500e335e4 Olm version: 3.2.8

Homeserver

chat.element.io

Will you send logs?

Yes

[t3chguy]

I had this happen and it was an unexpected Synapse error claiming an event I myself sent (and existed in my DB) did not exist.

[t3chguy]

Blocked pending a rageshake with new logs

[HarHarLinks]

i'm submitting a rageshake, i did the following:

1. create a permalink to a thread message in room A (public, no e2ee)
2. send the link in room B (e2ee, link previews enabled)
3. click the link

At this point one of several things can happen:

• the thread panel in room B opens (but is empty)
• navigate to room A but thread panel does not open
• navigate to room A and thread panel opens

In the last case, then returning to room B will have its thread panel open as well, and display the error "could not jump to the requested point in the timeline" (wording similar).
Unless I close the thread panel, this issue remains.

[germain-gg]

Was fixed as part of matrix-org/matrix-react-sdk#9356
Can not reproduce anymore