Misunderstanding the room’s purpose. Each room has its own purpose, and you’ll create friction if you attempt to use a room against the existing group’s intent. It’s very common for the external perception of a given room’s function (“they make all the decisions in the leadership team meeting”) to be rather far from how the room thinks of its role (“we don’t make decisions, just surface problems to discuss”). Take the time to understand how the room operates and integrate into it with respect for that intention.