I just want to make sure this is not just a "problem" in my tenant.
We have enabled busy on busy - because if someone is on a call, you should not get again a call automatically. Which is a very bad user experience. So far - so good :) but if you are on a call and someone wants to add you to a conference, you will get also a call although you are already on a call.
This is not cool - for me it is ok when you get something like a call waiting, but when the user is getting annoyed by a additional call, that make no sense in my point of view.
Is this the expected behavior? If yes, this should be fixed!