Yeah, 100% same error.
The bug is in the compression. If I expand and compress, without touching the folder, the new tar.gz crashes. If I try to restore from the original backup, it starts, but crashes in line 3.9M
The lines I use
tar -xvzf org-backup -C clean-folder
and
tar -cvzf new-backup -C clean-folder .
There is a dot in compress line, not in extract line
Anyway, thanks for trying 