It was an optional opt-in labs feature that I tried for an hour then turned off, but now they force it. The new UI is more busy for no good reason. Sidebar mak

It was an optional opt-in labs feature that I tried for an hour then turned off, but now they force it. The new UI is more busy for no good reason. Sidebar makes sense in a local IDE, but over web every time you expand a subtree it takes ages anyway. And because it merely exists it is distracting and makes pages load slower...