Issue: Loading/Creating Group Tabs lose title after update to 5.3.0.1

[megamorphg]

Steps to reproduce

After updating to 5.3.0.1 I notice that that group pages are behaving strangely, losing the title when activated.
I can't find a way to fix this including unloading/reloading and it also occurs on new groups:

Actual behavior

After opening the unloaded group page, it only says "Group". The URL stayed the same as before.

Also show ... in the sidebar.

Expected behavior

After updating, group pages load and unload normally.

System

Windows 10

Firefox version

134.0.1

Sidebery version

5.3.0.1

Logs

No messages.