The new version of macOS 10.14.3 has been released a few minutes ago by Apple to correct the bug that affected group FaceTime calls and that allowed users to hear and see the person we were calling before he even picked up the call.
In fact, this bug has given much to talk about in the specialized media due to the privacy problem it caused in users, although it must be said that few knew about this bug and Apple's response to the failure was really fast and effective, deactivating the servers that allowed group calls to be made shortly after the problem was known.
The new version released fixes the bug
So the version that we already have available to download all users on our Mac from the System Preferences> Software Update what it does is solve this problem exclusively. In addition, Apple recommends that we carry out the update as soon as possible to prevent any other security failure and obviously to be able to enjoy the group call service in FaceTime that they deactivated again.
The truth is that it did not take long since the failure was detected until they have fixed it. In short, it is an important security and privacy problem, so the response in these cases has to be quick, something that Apple is quite well used to. Everyone to update Macs and other iOS devices, which also have their update to fix this problem.