FFmpeg might be trying to connect multiple times/ways. So it might try port 1935 and port 80. There could be a problem in FFmpeg with how it adds the port number to the URL that is causing this problem. It is not a Wowza problem for sure. I guess I still don't understand why you think it is a Wowza problem.
I really don't know. We are throwing the error because the URL is incorrect. There is no need to argue. It is not a Wowza problem. We are receiving a connection attempt from an incorrect URL, end of story. So we are throwing the error message.