The same operation (opening a template file) succeeds with libreoffice
installed as a deb, and the template is read-only too. The major
difference between the two is that in the case of the deb the error code
when trying to open the file in write mode is EACCES, whereas for the
snap it's EROFS. I
Stracing the app reveals what the problem is:
12442
open("/snap/libreoffice/47/lib/libreoffice/share/template/common/presnt/Blueprint_Plans.otp",
O_RDWR) = -1 EROFS (Read-only file system)
the app is trying to open the template file in read/write mode, but it's
in a read-only location.
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You
