As a lot of you probably know, holding Alt allows you to select parts within a model without selecting the entire thing at once. I’m not sure when it was added but now Alt+S opens the Studio setting window, which happens pretty much every time I’m trying to Alt-select a part while moving my camera which is pretty instinctual at this point.
A similar thing happens when holding Shift while moving my camera as I’m resizing a part. Holding Shift makes camera movements smoother but also makes me inadvertently enter the new mode of resizing.
A way to get around this is by also holding shift. Alt->Shift (and S to move camera) will allow you to select multiple parts inside a model without the studio settings popping up.