I have Camtasia Studio and was able to record it (to a short video). The file got too big to be uploaded here even zipped, so it's at Youtube at this address.
https://youtu.be/WKVUrxGRxcE
In this case, I didn't even have to go to the 2nd monitor.
An older version had this bug before and it was fixed but I think it came back somehow.
Thank you!
Wtin