Timeshift crashed my desktop!

cross-posted from: https://sh.itjust.works/post/31907670

When I use the Timeshift GUI to create a snapshot, it takes a very long time to complete. If I click Cancel, my desktop environment crashes and I get kicked to a black screen or a login prompt.

When I use Timeshift CLI, it creates the snapshot in less than a second, but the command waits for a long time afterward. However, it can be safely interrupted with control-C.

Timeshift is in BTRFS mode.

Output of Timeshift command, interrupted

Using system disk as snapshot device for creating snapshots in BTRFS mode
Mounted '/dev/dm-0 (sda3)' at '/run/timeshift/33685/backup'
btrfs: Quotas are not enabled
Creating new backup...(BTRFS)
Saving to device: /dev/dm-0, mounted at path: /run/timeshift/33685/backup
Created directory: /run/timeshift/33685/backup/timeshift-btrfs/snapshots/2025-01-29_15-21-49
Created subvolume snapshot: /run/timeshift/33685/backup/timeshift-btrfs/snapshots/2025-01-29_15-21-49/@
Created control file: /run/timeshift/33685/backup/timeshift-btrfs/snapshots/2025-01-29_15-21-49/info.json
BTRFS Snapshot saved successfully (0s)
^C

#output of time command
real    0m1.165s
user    0m0.004s
sys     0m0.009s

Output of Timeshift command, run to completion

[Warning] Deleted invalid lock
Using system disk as snapshot device for creating snapshots in BTRFS mode
Mounted '/dev/dm-0 (sda3)' at '/run/timeshift/32947/backup'
btrfs: Quotas are not enabled
Creating new backup...(BTRFS)
Saving to device: /dev/dm-0, mounted at path: /run/timeshift/32947/backup
Created directory: /run/timeshift/32947/backup/timeshift-btrfs/snapshots/2025-01-29_15-13-13
Created subvolume snapshot: /run/timeshift/32947/backup/timeshift-btrfs/snapshots/2025-01-29_15-13-13/@
Created control file: /run/timeshift/32947/backup/timeshift-btrfs/snapshots/2025-01-29_15-13-13/info.json
BTRFS Snapshot saved successfully (0s)
Tagged snapshot '2025-01-29_15-13-13': ondemand
------------------------------------------------------------------------------
Maximum backups exceeded for backup level 'weekly'

#output of time command
real    1m12.419s
user    0m0.001s
sys     0m0.009s

Possibly related to this bug?