Today I managed to get the original broken state again, here’s what I saw:
The dashboards with charts show only empty axis.
The Chrome dev console shows none of the errors I saw yesterday, everything seems normal. In the network tab there’s nothing either.
The Karaf console shows no error messages about persistence.
The persistence link quoted in my previous post now does NOT throw a 400 error. It simply gets no result at all, the server does not respond to it.
At the same time I see that item updates come through on the Chome console and I see the updates are also continuing to be persisted into the MySQL database.
Any ideas what this could be or where to continue searching?