Hi Oleg,
I have just noticed a rather erratic behavior with Imported playlists.
I have about 40 imported playlists. Previously I just needed to tap one of them for the list to load and begin playing.
Now, most of the time nothing happens when I tap a playlist. However, if I tap it's menu selection and then select "Play" or "Shuffle", it works.

To complicate matters on the odd occasion I have found tapping a playlist brings up a dialog box offering the option to rename that playlist!?

And on another occasion tapping a playlist simply exited from the playlist and returned to the home screen.

I'm running ver 3.7.0 of the app.

Thanks