Sorry for the bullshit question: where can I find the logs after turning on IAS logging? There is a debug.txt file in APPDATA/Local/deCONZ, but it is > 1 year old and there is no such entry. I cannot find anything else which looks like a log file…
P.S.: I followed this guide for debugging.
Edit: Now I noticed that the Debug view itself shows the logs, sorry for being such an idot 
However, there is absolutely no entry when turn on IAS only after approx. 10minutes meanwhile. If I turn on some others, then there appear several lines immediately. That’s how I noticed how this works by the way 