In the latest update on iOS, when I'm playing a song, the 3-dot "more" button was moved to the top.
This button is one of the most useful buttons on the screen. When you press it, you can immediately add the song to a playlist, or go to the song's album, or go to the song's artist's page.
Now that you've moved it way to the top, it's really difficult to reach it with my thumb if I'm holding my phone with one hand. Try holding an iPhone X or an iPhone XS with one hand, skipping through songs, and then adding them to a playlist as you go. You need to basically stretch your thumb to the top of the screen in order to reach that button now. I really do not understand the UX improvement of this at all.
PLEASE move this back to the bottom of the screen so that it's convenient to press again.