Bounds use different dimensions with scale-monitor-framebuffer
Analogous to #2631 (closed), bounds are also reported as physical pixes without scale-monitor-framebuffer. If scale-monitor-framebuffer is enabled, the bounds are already multiplied by the scale factor.
If that's the intended behavior, it would be good to know how GTK should detect which units are used.
One convention could be, that the bounds are already scaled if a fractional scale factor has been received before. However, currently, this info is coming too late #3262 (closed).
/cc @matthiasc