Decibel won't play with connected bluetooth headphones

Decibel won’t play anything when my bluetooth headphones are connected to my computer. The Play button is enabled, but pressing it has no effect.

Which version of Decibel are you using?

About box says 1.3.5 (37). Check for update says this is the latest version.

I’m using Shure Aonic 50 headphones. I don’t have any other bluetooth audio to test with.

Do your headphones show up in the list of output devices?

Yes they do. And other players work OK (VLC, youtube, etc).