Hi, I can report a similar issue that's been cropping up since 2.2.10 of the Mac App Store version, and still exists in the current 2.3.1 standalone.
Basically - it happens for me when I am playing a wav file, and queue another wav to play mid way through playback of the initial track. The 2nd track loads, but then there's no sound while playing. Then all other tracks will be silent also. A restart fixes it.
It seemed to be more of a consistent issue with 2.2.10 but still happens at times with current version. Not a perfectly reproducible issue unfortunately.
They were 48,000hz files. I seemed to have fixed the issue by enabling 'Synchronize Sample Rate with player'.