@refi64 I went down to chromium code that calls directly into gtk and well, it's not pretty...

https://chromium.googlesource.com/chromium/src/+/lkgr/ui/gtk/window_frame_provider_gtk.cc#233

so they render an empty window "offline" to then try to find the bounds through the rendered bitmap, detecting pixels and whatnot.

this is insane, right?