Hi Oliver,
sorry that it took me some time to answer, I was on holiday.
soon it will be my holiday too!
This looks like a bug. I've pasted your report here (please extend if you have more details): https://osmocom.org/issues/4163
I will extend the report and take a look in the code to see what is going on.
Anyway, in it is working as expected! I'll investigate the logs further.
There is a word missing, but it seems that for the most part it is working as expected? ;)
Sorry for the typo - It is working as expected, yes! ; )
Rafael