Firefox shows close and unsaved icon together but should just be unsaved icon

Reproduction:
1. Open a song
2. Modify it
3. Observe tab

Expected (Chrome):
<img width="181" alt="image" src="https://user-images.githubusercontent.com/9429556/196512417-d21af2f0-99a2-496f-baf2-275d2cf358c8.png">


Firefox:
<img width="180" alt="image" src="https://user-images.githubusercontent.com/9429556/196512436-cc9a8e32-b54f-44ce-93ab-e959a536075f.png">
