I was just curious and also wanted to judge the risk if I ise it. Thanks for the insights by both of you.

As for testing and bug reporting: I would love to help out and by that give back some to those investing their precious time. I'm afraid, this is out of my limits at the time. I know it sounds like a common excuse, but job, family and being financial council of an association (is this what Vereinsvorstand translates?) eats most of my time. I didn't even manage to give promised feedback to PureMaps (sorry @rinigus).