I download source of SciTE and run `make GTK3=1` under scintilla/gtk/ and scite/gtk (on Fedora 29). SciTE runs almost fine from the command line... But the problem is still there, and it shows: `Gdk-Message: 21:36:23.603: Window 0xee4c80 is a temporary window without parent, application will not be able to position it on screen.` each time I type " or ^ dead key. A curious thing: I can type `^e` in a search/find dialog without any problem (I get `ê`).
Where to dig now?