Playback bar renders incorrectly, is unusable on iPad in landscape mode

Steps to reproduce

1. Open Funkwhale on iPad in landscape mode
2. Play something

What happens?

Elements of the playback bar are duplicated and/or overlap, making some inaccessible.

What is expected?

The playback bar should render without any duplicated or overlapping elements.

Context

Funkwhale version(s) affected: 0.21
iOS version: 13.4