I have this problem as well, have for quite some time, but it's sporadic and something I can deal with. I'm fairly used to hitting space-bar once I hit play. This is absolutely related to digital audio being enabled, if I turn it off--it's unreproducible.
please let me know if there's anything I can provide to help. I'm not positive on the build I'm on, i tried to move to 23807 but it was crashing on opening anything so I went back to 23493. I can get numbers when I'm at home. This is one of those nuisance bugs that I'd definitely like to help rid the community of
I have two mac minis where I can reproduce this--one is one of the newer ones (not from today's releases). I can also reproduce it if its off attached storage, or over the network. Audio is setup SPDIF out, if its analogue (as stated earlier) its not reproducible.