Hi, I had a scene I built back in 4.12 previews with some sound notifiers added to character animations. Now I continue working with that scene in 4.12 release version and sounds just stopped playing when I hit Play to simulate my Sequencer animations. When I hit play in Sequencer though, all sounds play as needed. Only when simulate they just refuse to play.
Here are some screenshots of my animation notify markers and of a sound cue I use for this one. Even in animation preview window all sounds do play as needed. But not when I simulate the whole sequence. And there is a screenshot of my Sequencer with the character selected.
All other sounds DO play when I simulate. For example I have lots of sounds triggered by event track, all of them do play. Ambient sound cues I placed around the level do play as well. Only Notifies refuse to play.