The weird thing is, after doing this, there is an additional "pluma" in the Properties/Open With list. It appears that for some reason "Pluma" is forbidden from being the default application to open these files with, but you can get it to work with "pluma".
The weird thing is, after doing this, there is an additional "pluma" in the Properties/Open With list. It appears that for some reason "Pluma" is forbidden from being the default application to open these files with, but you can get it to work with "pluma".