Suddenly can't open a file about tincta

[greimers]

This might be related to how the sandbox is configured.
Tincta can only open "user selected" files. It might be, that macOS does not consider Apple Script commands as user initiated. Adding Tincta to the Full Disk Access exceptions probably has no effect because it never requests this permission (and I am not sure if this is even an option available for App Store distributed apps).

It is strange, however, that it worked in the past, because we have not changed anything about this. Maybe macOS changed how it handles Apple Script file openings as part of a recent security update.