Here you go !! I’m 1000% sure I’m running the patched version 
and have built the code several times.
I haven’t updated the engine from launcher but got 4.14.1 from GitHub. if need any more info we could skype if there is time or maybe Email or something to avoid time-zone problems. I’ll be gathering more info about it parallel. For now spawning the sound actor works for me but as its a major bug, I would like to help fix it as much as I can.