Well, I'm sorry but it's not fixed completely (5.20 beta 1)
Just open the project. There is a noise generator to send signal from ch1 to ch2. In bar 1 the send is muted, so no audio is sent to ch2. jump to measure 2, the mixer will now show that the send isn't muted any longer (fixed! previous versions haven't shown that) but no audio will arrive ch2!
Audio will be sent as soon as about 2.1.0097 is reached.