I ran into audio looping issue with my game as well but only in browser. The fix was to make sure to enable looping on the audio file resource during import in additional to checking the looping box in editor
Oh, thank you! I had the audio looping checkbox on, so I'm guessing it was me not know the proper settings. I'll check that out.
(I'm trying to reproduce the error in the browser but the audio is working fine, I think it's because I might be on Firefox and it's a chrome issue, Opera or Brave.)