That's strange, does it happen all the time and is it only OMP that is unresponsive? Although I didn't experience anything like that, it's possible that it's been accidentally fixed, as there were lots of changes under the hood since the last build.

I wanted to finish up a few things before posting this, but that report of unresponsiveness keeps me wondering if it still occurs. Here goes the simplified changelog (full is always here):

• Indicator in the bottom right hides when the playlist is empty (but from time to time it appears when it shouldn't, overlapping the searchbox).
• Instant opening of Now Playing window after the first time.
• Song time counter goes higher than 59:59.
• Fixed Now Playing window sometimes not displaying metadata in the list.
• It seems rock stable. If you can crash it, make sure you let me know.