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

Output of Timeshift command, run to completion

Possibly related to this bug?