Firefox power inhibit remains until quitting the application
When playing media in Firefox power management is inhibited to make sure the screen doesn't lock or the computer goes to sleep. Since !22 (merged) got merged this works as expected in Xfce. However, as it is the power inhibit is never cleared. Even when media stops playing and the tab is closed the Xfce power manager still lists firefox as inhibiting power until firefox is closed.
This is not reproducible with chromium 114.0.5735.90; power inhibit is cleared as soon as media stops playing.
At first i thought this might be an issue with firefox and decided to wait for a few releases to see whether it was already taken care of.
However, currently as of Xfce Power Manager v4.18.2 and firefox 113.0.2 this is still the case while on KDE Plasma 5.27.5 power inhibit is cleared as soon as media stops playing / loses focus in both chromium and firefox. So i guess this needs fixing whithin Xfce after all?