System Monitor report incorrect 'Available' disk size and calculates wrong 'Used%'
I am running System Monitor 3.38.0 on Cinnamon. System Monitor report incorrect 'Available' disk size and calculates wrong 'Used%'. Please refer to the enclosed snapshots.
I have two similarly set up mounts, both are btrfs-raid1 with 2 disks over luks. For one of them /home System Monitor shows correct 'Available' value and calculates correct 'Used%'. For the other /mnt/backup it shows Available=0 and Used=100% which is wrong.
Linux Distribution: Linux 5.10.9-201.fc33.x86_64 #1 SMP Wed Jan 20 16:56:23 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux Link to bugreport of your Distribution (requirement): https://bugzilla.redhat.com/show_bug.cgi?id=1919679