worth a try
if can, try uninstalling nautilus and nautilus-data ect. watch what else leaves also (so can find suitable replacements).
Nautilus has a habit of taking over things (especially desktop & WM) when ran. A update may be triggering it, once ran likes to keep running and take on more responsibilities (
I think Maya-Xfce doesn't have nautilus but does still have nautilus-data that "helps it have a foot in door'
had no nautilus but something pulled it in after a update (uninstalled 'nautilus-data on reinstall updated 'no nautilus")
P.S. that's why like installing stuff with synaptic (list dependencies easier to read) mints software-manager does same (& more) but the list is a block of text.