It's so fundamentally terrifying that someone would consider that "totally fine".
Prosecutors will take breaks in their offices within the same building while the defense has to leave the building in order to have a private conversation, that sounds totally fair and reasonable.
Well there are times when attorneys are part of a criminal organisation and are used as a communication link to the outside world.
Nobody considered that when the laws were written but we live in a world of billion dollar drug cartels.