Thank you.
I skipped currently running older kernels. Instead I went and read about the lengthy discussion about underlying kernel bug
https://bugzilla.kernel.org/show_bug.cgi?id=203973
The last comment I found workaround. I don't know the implications for changing write_cache to "write through" with:
Code:
echo "write through" > /sys/block/<dev>/queue/write_cache
... but it seems to work.
I'm currently trying to figure out how to make this into a udev rule.