After applying the 2022.10.05 update to Manjaro Stable, timeshift is behaving weirdly. As soon as I start making a backup — just for clarity, using the rsync method — the timeshift GUI crashes.
Nevertheless, it does start making a backup in the background. However, as far as timeshift itself is then concerned, the new backup does not exist. It shows up neither in the command-line list nor in the timeshift GUI when it is restarted.
[nx-74205:/dev/pts/3][/root] # timeshift --list
Mounted '/dev/sdb2' at '/run/timeshift/2932/backup'
Device : /dev/sdb2
UUID : 1aedac7f-403b-4d85-9643-0d622be75453
Path : /run/timeshift/2932/backup
Mode : RSYNC
Status : OK
2 snapshots, 577.3 GB free
Num Name Tags Description
------------------------------------------------------------------------------
0 > 2022-09-18_10-48-00 O
1 > 2022-10-06_10-55-00 O skipped Plasma 5.24 LTS → 5.25
Found stale mount for device '/dev/sdb2' at path '/run/timeshift/2932/backup'
Unmounted successfully
[nx-74205:/dev/pts/3][/root] # ll /mnt/timeshift/snapshots/
total 0
drwx------ 1 root root 112 Sep 18 10:50 2022-09-18_10-48-00
drwx------ 1 root root 112 Oct 6 10:57 2022-10-06_10-55-00
drwx------ 1 root root 60 Oct 6 12:45 2022-10-06_12-45-00
drwx------ 1 root root 60 Oct 6 12:51 2022-10-06_12-51-35
As you can see, it did indeed make the last two backups, but timeshift does not recognize them — it only shows the two older backups.
The following two people have also reported difficulties, albeit with different results.