I ran a backup using the UI (filesystem repo, fresh repo, first run). I basically backed up a few sources. And there have been no (visible) issues. Except for one source.
In Tasks I can see this snapshot summary for that source
Cached Bytes: 8 GB Cached Files: 4,186 Excluded Directories: 4 Processed Bytes: 8 GB Processed Files: 4,186
This number of excluded directories was a surprise, because I had disabled the default “no cache, temp, …” exclusion.
I tried to find out what directories were excluded, but there does not seem a command for that. So I mounted the snapshot and compared the two with Meld. I could see two differences. One folder was missing, because I had excluded it with an ignore rule (/donotbackup/). But another folder was missing as well: gapps (this folder has one zip file). I am not able to explain why this “gapps” folder is missing.
So I see two potential bugs here:
The task summary is wrong (it should be 2 excluded directories instead of 4).
A folder was skipped without apparent reason