Removing BBB widget for everyone crashes Element

[axelsimon]

Steps to reproduce

The Element video call is hooked up to BigBlueButton using Dimension: clicking the button creates a BBB meeting and adds the widget to the room, letting users join the conference.

1. While trying to investigate a different issue with this setup (BBB widget not prompting for permissions for media devices and not finding camera or microphone) i am creating and adding the widget often.
2. I click "remove for everyone", which worked fine up until very recently
3. Element Web crashes, suggesting to either submit debug logs or clear cache and reload

Outcome

What did you expect?

Remove the widget without any issue.

What happened instead?

Element Web crashed

Operating system

Fedora Linux 37 (Workstation Edition)

Browser information

Firefox 109.0 (64-bit)

URL for webapp

https://element.hu-berlin.de

Application version

Element version: 1.11.20
Olm version: 3.2.12

Homeserver

Synapse 1.75.0

Will you send logs?

Yes

[robintown]

Reproducible with Jitsi by removing the widget while joined to the call