Problem with CBZ & CBR thumbnails in Ubuntu Mate 16.10

[monsta]

If they would allow a new upstream release (that is, 1.16.1) for SRU, it would be better than picking patches, because it would also fix an annoying bug:

Bug #1540018 “atril-thumbnailer crashed with SIGSEGV in ev_docum...” : Bugs :...

See this thread for discussion of the impact it causes:

Tmp folder filling up

I am running ubuntu-mate 16.04.1. I partitioned my harddrive so that my root (/) partition is 60 GB. Periodically during the day the Disk Usage Analyzer will pop up saying that I am running out of space in the / partition. In checking there will be over 50GB of files in the tmp folder. Of course, these are cleared out when I reboot. Is this a possible bug in ubuntu 16.04? I have read the other posts relating to this question, but no one is addressing why Ubuntu is putting 50+GB of files (almost …