Problems with hiding taskbar

[drawbars]

I recently upgraded Win11 to the 2025-09 Update Preview (KB5065789/26100.6725).  Since then I am having a problem with StartAllBack 3.9.15 (latest version).

If I select Automatic Hiding of the enhanced classic taskbar, the taskbar hides as expected but a new set of taskbar icons appears under the 'real' taskbar, on a transparent background.  The indicators for volume, antivirus, etc. on the right hand side are also duplicated.  These extra taskbar buttons and indicators will not go away, and they are fully functional.  The only solution that I have found is to disable an auto-hidden taskbar.

This only happens on the main monitor; secondary taskbars work as expected -- i.e., they disappear when the mouse leaves their area with no leftover items behind the taskbar.

I have uninstalled and reinstalled StartAllBack, but this did not change the problem.  I have tried disabling the enhanced classic taskbar, restarting Explorer, then re-enabling the feature:  this also did not change the problem.

Has anyone else seen this?  Is there a workaround?

[Tihiy]

Try test version https://startisback.com/StartAllBack_setup.exe

[fr0stycam]

On 10/4/2025 at 1:52 PM, Tihiy said:

Try test version https://startisback.com/StartAllBack_setup.exe

I've also been having this problem on the latest cumulative update and 3.9.16 doesn't seem to fix it fully unfortunately. I have a 2 monitor setup and it usually manifests on either one at random after each reboot where the taskbar will be stuck stuck as a fully transparent one with icons/items/time visible, but still acting like it is hidden so windows can fill the space and get overlaid with the icons/etc. In my case, it seems to more often than not be my non-primary monitor upon reboot/login and I can usually fix it by manually flipping auto-hide on and off again, but sometimes that doesn't work either or it will be on my primary instead and not be fixable with flipping auto-hide, it's very random.

Would love to add any logs/dumps or test possible fixes!

Autohide off (both in Settings -> Taskbar and SAB 'Automatic hiding/shyness' settings off):

Autohide on:

Settings (enhanced classic start menu on): 

Edited 1 hour ago by fr0stycam
added help extension + more detail