> Thanks Stefan. Unfortunately, I'm not an expert and currently do not seem
> to be able to do something to get rid of this strangely long-lasting bug.
> I hope someone will do it soon.
It's easy to work around this problem: don't use UUIDs.
After all, if you're using LVM, then your partitions have meaningful
names, so use those rather than the incomprehensible and
meaningless UUIDs.
Stefan