Fullscreen Mode Filters Window switches

I’m using Glyphs in fullscreen mode. When I start a filter for the first time after opening a glyphs file (i.e. glyphs internal filters (repair compatibility, transformation ) or external (RMX Tools)) the filter appears either in the window I used last or on the desktop. I have to close it then, navigate back to the fullscreen window I’m working in and run it again which makes it appear in the correct window. Does anybody have an idea how to fix this?