Need to know few more thing, since, I still can not reproduce your issue on my system.
Look like you have all black wallpaper or you set your windows background to solid dark color?
Also it might be due to high refresh rate on your monitor Alienware. Is it possible if you can, as a test, just run on one of your other monitor, hopefully with lower refresh rate. And, see if the issue still the same.
Thank you,
Basj,
Stardock Community Assistant
My background is a solid black color with no wallpaper. I changed the background color to green and adjusted the monitor refresh rate to 60Hz, similar to all the other monitors. I recorded a new video to demonstrate that the issue still persists on the monitor. I'm beginning to suspect that Start 11 may not be fully compatible with ultrawide monitors resolutions for some reason.
Also have you altered your UAC settings in any way?
I have not made any alterations to UAC in any way. The only modification I've made to Windows is installing Start 11.
Taskbar pins are user pins and not something the uninstaller can remove itself as it did not create them.
Thanks for sharing that information. It seems like users might assume that, since you can't natively do this in Windows and Start 11 has the option to pin folders to the taskbar, Start 11 is responsible for this capability.

On an unrelated note: I would also like to share that posting on the forums has become increasingly difficult. Each time I attempt to reply or interact with my account, it consistently will not allow me to login. At one point, I received a too many redirects error.