Mate screensaver triggers caja looping forever on spefic per user file patterns.

[fpl]

I already reported this as a side note for autodir here. I recently discovered that this behavior is triggered by mate-screensaver. The context is any long-running VNC session and the consequence is an high cpu load for caja and a secondary excess of logging for autodir by syslog (accumulating TBs of logging until caja killing and restarting).

What is interesting is the pattern used in searching not existing files continuosly, generally associated to <username>.{ico,png,tiff,wbmp,svgz,tga,webp,xbm,xpm,icns,...} and other non-existing user-related files. This behavior is visible in any Debian release at least since buster (10). An obvious work around is disabling mate-screensaver. I'm quite sure this issue is a secondary consequence of some odd behavior in the screensaver, but I have not more hints about.