Timo, Philip, Paul, Kim
I reported here and here two issues about Plone 5.1.5.
Except if I'm wrong (or if I'm right but they are already fixed), these issues should be fixed for Plone 5.2, IMHO.
The best thing to do is not only to mention it in the forum, but to create an issue in the Products.CMFPlone repo or check if someone else has already reported it (and if so maybe you'll be able to track down whether it has been fixed).
You're welcome, Kim!
I'll open an issue since there isn't any open one about this problem.
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