When viewed side-by-side, the -
and the tick icon have different sizes, resulting in "moving" text.
Also, notice that when the Window is disabled, the window bezel seems to go missing (but I guess that could be GTK issue)
https://github.com/Xpra-org/xpra/issues/2784 POST reply failed 😕
this ticket has been moved to: https://github.com/Xpra-org/xpra/issues/2785