Running windows 11 Insider Preview build 22471.
After upgrading start11 to the latest build, the clock and notification area are missing from the taskbar.
I can get them back by removing and reinstalling start11, but this is a lower build obviously. After installing the update that it prompts to download when checking for updates (0.90), the clock and notification area disappear again.
After doing some testing, this only occurs if a custom image is used for the start button. Disabling the custom image restores the clock and notification area.