Amazing software mate!
I'm on 24H2 21620.1252, Dev channel, new taskbar works like the old one, but Show Desktop or Win+D shortcut does not work properly. After a reboot, it will work once to show desktop, and then it doesn't respond ever again unless explorer.exe is restarted. This also breaks fullscreen functionality in media players/browsers as it now starts to display the taskbar on the screen at all times. I've temporarily disabled the visual shortcut though I do sometimes without thinking press Win+D and I'm having to restart explorer from time to time. Hope this gets resolved mate! Much love for this product!
Aside from that, every StartAllBack version I've used has a problem with top taskbar where the notificaiton area/calendar will most of the time pop out from the left side or not show at all after a restart until you go to StartAllBack settings and change the taskbar to bottom and back to top again. Then it will display properly until windows or explorer is restarted. Slightly annoying but not a ridiculously big deal, haven't scanned through all of the forums on the stable version to see if this is a known issue. In light mode as well, the arrows will be white instead of black until you toggle theme from Kinda 11 to Kinda 10 and back again. Weird issue but again, only happens once per restart, which is not a huge bother. Included some images of former problems, though it's pretty self-explanatory. Cheers!