I noticed something in desktop app when I turned on the Video Chat from settings, every time I open the app, webcam turned on even without using this feature, it just always turned on.
macOS High Sierra 10.13.6
Delta Chat Version 1.32.1 (git: v1.30.0-65-gd0fedbc0)
strange, the only thing with the webcam that I know off is that the webcam sometimes does not turn off after scanning an qr code, it should have nothing to do with video chat invite links.
See camera stays sometimes on after qr code scan · Issue #1730 · deltachat/deltachat-desktop · GitHub