@BestHTTP
We tried out Unity 2019.1f2’s exciting new WebGL threading feature [Release Blog] [Forum-Thread ] today for our project and we got it running so far.
Unfortunately it looks like BestHttp’s web sockets won’t send any messages any more with threading enabled.
The socket seems to be open (IsOpen() returns true when debugging the invoked Send() method) but the server never receives any data.
As soon as I disable threading and do another WebGL build everything works fine again.