You have specified the window class as unimportant. This means the settings will possibly apply to windows from all applications. If you really want to create a generic setting, it is recommended you at least limit the window types to avoid special window types.
Rydych wedi penodi y dosbarth ffenestr fel heb bwys. Golyga hyn fel gellir y gosodiadau gael eu gweithredu i ffenestri o bob cymhwysiad. Os hoffech greu gosodiad generig o ddifrif, argymhellir o leiaf gyfyngu' r mathau ffenestr er mwyn osgoi mathau ffenestr arbennig.