'Tis true. Changing channel is a bit messy compared with other software. When watching a channel and changing, I get a repeat of the last couple of seconds of the channel I'm leaving, then a bit of stuttering video for the next channel for a second or so, and then the new channel starts and runs normally.
It works but it doesn't look nice. In an ideal world, it would be tidier, but I can live with it. Perhaps by v 23 it should be better?