pg-backup stays stuck in "Running" and blocks the next backups

After upgrading to 2.5.0, scheduled backups’ pg-backup objects ends up stuck in “Running” status, leading to subsequent backups being blocked.

Even though the backup pods were completed.

How I reproduced:

From:

Then using a schedule

Then tuning

then upgrading

Then upgrading images to 2.5.0 in the perconapgclusters object

=> no apparent issues yet

After a few backups, it got stuck at running as well.

Trying to delete pg-backup, backup pods, and removing annotations led to issues with the leftovers still blocking the subsequent backups

Backups just pile up after that