Despite allowing access to the camera and microphone the MediaStreamTrack.getSources web API does not give access to the label on the javascript side

Despite allowing access to the camera and microphone the MediaStreamTrack.getSources web API does not give access to the label on the javascript side. This happens with https://simpl.info/getusermedia/sources/. It is easy to see if the page is inspected, putting a breakpoint on main.js:13 allows you to see what label for SourceInfo is set to. When doing this in Chrome it is set to the right label, but not when it is done via QtWebEngine