Sometimes I don't notice it when my playlist ends and the recommended songs are played. The transition between playlist songs and recommended songs currently acts like a completely different playlist, meaning that once you heard through your entire playlist and the first recommended song plays, you're not able to go back (go "up" the queue) to your previous songs. You're only able to get back to the first song of the recommended ones.
I also don't want to disable the recommendations as I often find them really good.
Make the transition between playlist and recommended song invisible so that we have only one queue that we can go through backwards if we want.