Disk space is not freed up when deleting files on an encrypted hard drive

[mYnDstrEAm]

I have a hard drive fully encrypted with VeraCrypt. When mounted the drive has no disk space left. When deleting large files on it, no disk space is freed up. Most likely VeraCrypt is the cause of the problem. Here I found an old post of two people having the same problem. What can be done to make it update the free disk space?

Expected behavior

When deleting files, the disk space should get freed up

Observed behavior

When deleting large files, there is still 0 bytes of storage space on the drive

Steps to reproduce

1. Sync two encrypted hard drives using rsync with this command after running the same command without sudo using Grsync (to sync drives): sudo rsync -r -t -p -o -g --delete -l -s /media/veracrypt1 /media/veracrypt2
2. The target drive (the second in the command) gets full even when the first isn't and deleting files doesn't free disk space

Details here: https://unix.stackexchange.com/questions/767251/disk-space-is-not-freed-up-when-deleting-files-on-a-hard-drive/774209

Screenshots

Your Environment

Please tell us more about your environment

VeraCrypt version: now after an upgrade it is 1.26.7

Operating system and version: Debian12 with KDE but it first appeared with Debian11

System type: 64-bit