Thanks for those crash reports. Unfortunately they don't have any stack traces for some reason...
Since you seem to be pretty technical, the next steps I suggest are:
1. Install the debug symbols for gtk and apps like thunar.
2. Attach 'gdb' to thunar or any affected app.
3. Reproduce the crash.
4. Get a 'bt' backtrace from gdb and paste it here.
Thanks for those crash reports. Unfortunately they don't have any stack traces for some reason...
Since you seem to be pretty technical, the next steps I suggest are:
1. Install the debug symbols for gtk and apps like thunar.
2. Attach 'gdb' to thunar or any affected app.
3. Reproduce the crash.
4. Get a 'bt' backtrace from gdb and paste it here.