Only first theme clickable while playing tracks

Steps to reproduce

1. Play a track and the reproduction bar in the bottom will appear
2. Go to the bottom of the page and in the Change theme box, click to change it
3. Only the first option will be visible and clickable

What happens?

Only first theme is clickable while playing tracks, because the other options get hided by the reproduction bar. If clicked where the second (or third, ...) option should be, it's opened the Queue. No way to change the theme while playing a track.

What is expected?

The Change theme dropdown menu should move down the reproduction bar.

Context

Funkwhale version(s) affected: at least 1.0