crash to login screen when opening file

[XuHg-zjcn]

Expected behaviour

File opened

Actual behaviour

Go to login screen. after login, all window is disappeared. same effect as left-bottom corner Trisquel -> Log Out $USER -> Log Out

Steps to reproduce the behaviour

way1: open the directory in caja, double click a file.
way2: run pluma /path-to-file in terminal.
only open file in some directory will happend, copy the file to other directory, no error happend, copy other file into it also happend this problem.
try some other editor open these files, no error happend.

MATE general version

1.26.0

Package version

1.26.0

Linux Distribution

Trisquel 11.0

Link to bugreport of your Distribution (requirement)

I cut out relevant syslog, and gdb step run logging in the compressed
logging.tar.gz