I saw the most recent update mentioned "Fixes an issue with centered mode on the taskbar on Win11 not instantly applying sometimes" and updated, but this didn't fix my issue.
I'm on Windows 10 Pro 22H2 build 19045.6456, using Start11 v2.56
In the Start11 settings, I set my taskbar to be center aligned. But on PC startup, half the time it is left-aligned, and toggling that setting back and forth doesn't change it, it's just stuck on the left. My way of fixing it is by restarting or signing out and back in to re-launch Start11, but it's aggravating needing to do so half the time, sometimes repeatedly.
It used to be a rare occurrence on Start11 v1, and only became so frequent in some recent v2 patch.
Oh and I have two screens - sometimes this happens on one or the other, not sure if that's relevant.