While I have witnessed the following issues on my primary Windows PC (Version 10.0.22635.2700 - Yes Beta), I have also witnessed these very same issues on my work machine which is running 22631.2506 (Non-beta): (None of these issues are using the rounded taskbar.)
- Opening the start menu causes the taskbar to flash; however only when there aren't any additional windows on the screen. (I tried with different menu styles, however it was consistent.)
- Sometimes when closing the start menu (usually after opening/closing in rapid succession), the start menu collapses in front of the taskbar.
- When using the snipping tool, after taking a screenshot, the snipping tool hides, however if you re-run it, it re-opens and the picture that you snipped is in the window. (I thought this was a Windows bug and ignored it for the last year, however after uninstalling Start 11, I found the snipping functionality works fine, so it must be something with S11.)
All these issues with reproduced in 18.104.22.168.
(I have not installed today's release build yet.)