The explorer widow has a lot of empty space between the objects and the edge. Now this wouldn’t be a problem but when selecting objects/descendants that go further it forces it to auto scroll to the right. With the empty white space this causes everything else to go out of view and forces you to expand the explorer window to see what you are trying to work with.
Everything fits in the window but you can see the scroll and the empty space:
It forcing the scroll, and cutting things out of view with the immense amount of empty space:
I, too, have found this particularly annoying. It would be fine if it was the actual names of objects going offscreen that caused it to expand and move right, but right now its just empty white space pushing things out of view.
I try to have as much studio content collapsed as i can so i can clearly see what is in my terminal screen or roblox screen when working, and i agree that it is definitely a hassle to keep the explorer in the correct frame all the time.