Hi.
You can play from any place by placing cursor, the short blue one, or the red when you hover over any track and double click -> it will start playback from that spot., but once you stop, it will play from the start.
We do need a standard vertical cursor and expected behavior. Please take a look at this video and support this request:
https://www.pgmusic.com/forums/ubbthreads.php?ubb=showflat&Number=792822