/usr/share/gnome/apps/Graphics/ee.desktop has Exec=ee %f where it should have just Exec=ee This causes "%f" (literally) to be passed as extra argument e.g. on drag+drop in Nautilus (which doesn't work anyway, but I'll report that elsewhere); GNOME does not expect file name patters or anything in launcher spec.
We are dropping ee from the distribution (use gqview, nautilus, etc. instead).