Fatal error roon-remote local volume with ios15

Roon Remote iOS15

when i start the roon-remote app, the volume of the iPhone with ios 15 sets itself to full volume. The only way to fix it is to close the app completely. This is fatal because the full volume remains and when I listen to headphones it is damaging.
Please correct as soon as possible or provide a workaround.

Hey Holger! We’ve addressed this in this post.