Created attachment 171853 [details] cropped_dialogs WHen I have 100% scaling all is fine, with 125% or 150% o 2k or 4k monitors firefox dialogs (menu, popup, page security info,stored passwords) are cropped so that only a quarter of it is visible making dialogs totally unusable See attachments. I am not sure if it is Plasma , wayland or nvidia bug but my bugreport on https://bugzilla.opensuse.org/show_bug.cgi?id=1224161 has been completely ignored. Let's try some luck here at last to know where this bug may come from.
Created attachment 171854 [details] cropped scaling 2
Please report this issue to Firefox.
for all that have the same problem , the solution is to disable widget.wayland.fractional-scale.enabled which is supposedly a firefox test feature causing problems. so in your adress bar type about:config search for widget.wayland.fractional-scale.enabled and set it to false