Fully appreciate the annoyance! It will get fixed but it is a very tough one to debug. Basically we migrated the underlying database from mysql to mariadb, and some of the queries throw errors which are not fully trapped. I've fixed the vast majority but there are still a handful which are causing a couple of glitches, of which the worst one is the first unread issue.
Tracking it down is very difficult, as it is not consistent. It could very well be a couple of different things triggering it too. I've fixed a few things that I thought might be causing it but not nipped it completely so far.
On top of that, after each fix, I need to manually update the database records that were made erroneous by missing updates, which is always a risky job, so it needs me to be in top form and have the free time to do a full backup cycle either side of it which is why I can't just dive in until it is done!
It bugs me too - it will get fixed
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