Timeshift restores the wrong btrfs snapshot

[Schievel1]

Describe the bug
When I chose to restore a btrfs Snapshot A in Timeshift, it creates a new snapshot B with the commend "Before restoring date and time of snapshot A"
When I then chose to reboot, and look at the kernel command line in grub, its says subvol=/timeshift-btrfs/snapshots/date and time of snapshot B
And indeed, when I boot I booted into snapshot B.

To Reproduce
Steps to reproduce the behavior:

1. make a snapshot in timeshift
2. make some changes to the subvolume the snapshot was made of. (to check later which snapshot booted)
3. restore the snapshot from step 1 in timeshift
4. reboot

Expected behavior
Timeshift boots into the snapshot that was chosen to be restored

System:

• Gentoo Linux with ~amd64 keyword
• Timeshift v21.09.01
• Grub 2.06-r1