Dear Maintainer,
Starting, then canceling, a manual backup caused a system crash and restart.
Debian 12.11 with Gnome.
The abnormal behavior occurred when the Cancel button on the "Create Snapshot"
window was clicked during the "Calculating required disk space" phase. After
restarting, I ran the manual backup and it completed normally. After completion
there was 57.9 GB still available on the partition.
Other than this, Timeshift backs up (either manually or scheduled) and restores
as expected. A really good application.