These graphical corruptions appear as either a static horizontal line directly above the app.
They appears as a visible corruption on the right side of the album art view.
They appear adjacent to the right of the time remaining or other text fields and always at the far right edge of the screen.
This is a recurrent problem, it’s duplicated on 2 Android devices, both new. One is an LG v20 running Nougat. The other is a Samsung smartphone with an explosive personality running lollipop.
It may not be obvious by these screen shots because of the light background, but open them on a dark background and focus on either the top edge or right edge and you faintly see the corruption. They are clearly observable on my phone, but they are somewhat lost in translation during the image compression and upload to the forums.