945 LTE (firmware 4.16) does not count the tracks during swimming pool training

For some time now it has been happening that my 945 LTE (firmware 4.16) does not count the tracks during swimming pool training and therefore no distance is displayed AND recorded. The time is running, but the distance is not measured. That's super annoying if you don't pay attention to it and then only notice it after 2000 metres...
Restarting the swimming app alone does not solve the problem. Only when you restart the entire watch does the swimming app behave normally again.

I have already read also about this problem in Facebook. Can other users of the forum confirm this problem?
@Garmin: is the problem known to software development and is a solution being worked on?