I mean, make him stop disappearing. Untie him from the spaces in principle or something like that, so that it was "on top" of them, or something. And when scrolling, it did not go along with one, appearing later on the other, but it remained in its place, despite the change of spaces.
Over all windows .floatingWindow , including full-screen application is agent , as well as displaying on all spaces .canJoinAllSpaces and zero response to expose .stationary (in the original, I suppose .ignoresCycle , but in my case it is) done. Interested only described in the first paragraph.