Artists>Songs view displays a non-functioning ⊕ button

Open Audio mode
In the Artists view click on an artist, then go to their Songs view
A non-functional circled + button will appear in the bottom right of the view. It will stay there if one switches back to the Albums view.
If the Songs view is scrolled downwards the button will disappear. If the view is scrolled back upwards the button will reappear.

VLC 2.5.6
Revision 0ff43431 VLC: c9345038a6 (2017-10-20) ARMv8
Android 7.0
Phone: Sony Xperia XA1 (G3121)