Change from a playlist to a track does odd things with the back and forward buttons

[Dave Morley]

Description:
If you play a playlist get bored and switch to an individual track the back and forward arrows can become ungrayed out.
To see the difference Play a single track then play a different single track no ungrayed buttons, click on Shuffle All Songs in Playlist and then select a single track and forward and, or back is now ungrayed and non functional.

Service:
U1 Music Player
https://one.ubuntu.com/music/player/

Steps:
1. Goto the link above
2. Click on Shuffle All Songs under play lists
3. Click on the Artists Tab
4. Select and album
5. Click on the Album Title rather than the cover to make it play
6. In the Songs list select a single song and click on Play Songs

Expected Results:
I expect this to have the same effect on the player as it would if I selected a single song from the start.

Actual Results:
The forward back arrows can become ungrayed even though they do nothing on the single track