Same thing for me. When changed to Grid windows 7 it goes back to the bottom.

Windows 11 for me and the newest version of start 11.

Left aligned with custom start button.

and this continues with Start11 0.95?

Start 11 0.95 installed and seems to be working ok, but so did 0.94 when first installed. After I changed my wb skins a few times, that's when it messed up. But we will see.

yes

WindowBlinds 10.x is not compatible with Windows 11 and may well cause serious issues including explorer crashes.

I expect thats the problem here.

Which menu style are you using, where is your taskbar positioned, do you have anything running like Ultramon/display fusion?

Also how many monitors, does it happen if you press the windows key or just the taskbar start button and is it out of position the first time you open it?

Finally what resolution are your monitor(s) and what scaling factors?

Sorry lots of questions.

and a screenshot would be useful.

If you centre the start button does it make any difference?

Ok.  If you allow it to have more items shown, does the menu go offscreen or come down lower on the screen?

If I set it to show more items it doesn't go off screen, bottom side goes down.

I still have the same problem, Start Menu detached from Taskbar, appearing at the top of the screen.

Has anyone look into it?

No, I don't use Objectdock.