title doesn't update on the first tab that was created

[12Me21]

Add-on version: 0.13.1
Firefox version: 86.0.1
OS + OS-Version: Linux, Debian 10
Other tab + user interface related add-ons: (using userChrome.css to disable default tab bar)

After opening firefox (which restores the tabs from my previous session), the first tab's title doesn't update when the page's title changes.
if you close this tab, the bug usually goes away (it only affects the first tab created, not the first tab in the list)

[12Me21]

Tree Tabs seems to have the same issue
guessing it's a bug with firefox itself (so probably won't ever be fixed lol)

[Croydon]

Hey, sorry for the super late response. I never encounter that problem and have no idea what the origin might be. Is this still a thing for you?