No bottom rounded corners when Nextcloud dashboard tab is active. With other sites (so far I know) bottom corners are rounded and no issues. You can test with this Nextcloud server: https://nch.pl
This also happens with vanilla Firefox, so not really related to this theme. We just enable widget.gtk.rounded-bottom-corners.enabled in the config file.
No bottom rounded corners when Nextcloud dashboard tab is active. With other sites (so far I know) bottom corners are rounded and no issues. You can test with this Nextcloud server: https://nch.pl
Here is screencast: Screencast from 2023-12-18 17-28-48.webm