Bartender 5 is a paid upgrade. Bartender 5 has been completely redeveloped for macOS Sonoma.

Find out more about Bartender 5 at https://www.macbartender.com/Bartender5/

Bartender 4 is not optimised for macOS Sonoma. If you do not want to upgrade to Bartender 5 and wish to continue using Bartender 4 you might want to avoid installing macOS Sonoma.

If Bartender 5 is not starting at login for you, please see https://www.macbartender.com/b5blog/Bartender5-start-at-login/ for ways to fix this macOS Sonoma issue

I have worked with the developer of the Focus app to fix a compatibility issue between our two apps, that would prevent Focus from showing with Bartender, and could cause Bartender to misbehave, this is now fixed.

Items would now show/hide or move, if the new macOS Sonoma "show desktop" by clicking on the desktop was active. This has been fixed.

Show on hover in fullscreen had been disabled, to prevent a related issue. This has been fixed. So show on hover has been enabled again for fullscreen.

When changing spaces multiple times, the desktop wallpaper shown between the separate sides, could be from another space, this has been fixed.

When showing then dismissing a group, the behaviour was not consistant, sometimes requiring a second click to show the group again, or hiding all shown hidden items etc. This has been fixed.

If Bartender had hidden your shown items, to make room to display your hidden items, and you ⌘+dragged a menu bar item in the menu bar, your layout would be lost. This has been fixed.

This has been fixed.

Bartender was rendering the menu bar on spaces not currently visible/active. This has been fixed.

Thanks to the users reporting these, they have been fixed.

As stated, fixed small issues I found as I worked through it.