Skype pauses call when I switch to a different app in Ipad Pro

Hello, I'm using iPad Pro and whenever I switch to a different app the call I'm currently having in Skype it's put on hold.

I know that my cam is supposed to be turned off when I switch to a different app, and even I close it myself if I'm going to do that, but I don't know why the call is put on hold and the other person also stops hearing my audio and, until I switch back to Skype and resume the call, it stays like that.

Is this normal? Is there any way to fix this issue, so that whenever I switch to another app the call stays active (even if the cam turns off) and the other person can still hear my audio?

I tried to add the same in Skype community and I have been told that this is an issue with iOS and that it also happen on other VOIP apps in iOS, so I should rather ask here.

Hopefully you can help me with this.

Thank you!