darktable 5.4.1.
edit: solved. Thanks @Donatzsky
I was in light table mode - full screen preview (f). I fat-fingered something and now the lighttable right panel is showing in full screen. Click (esc) to get back to regular lighttable mode, That looks normal. Then (f) to get back to full screen and it’s still there.
I pressed (h) to get help. Either I’m blind or I do not see the shortcut to toggle the right panel off and on while in full screen preview.
