In the designer, under the Perspective portion of the project tree, the Styles folder opens every time you double click any other view that (under the Views folder) might need to be double clicked so that it loads its properties data into the main window. That then makes the project browser window reposition its contents, and in most cases, moves the content you are working with out of the visible range. This is no more than an annoyance for sure. I don’t see forum posts nor project properties to stop this behavior.
Just a bug maybe? In any case, I would just like to know how to stop it if possible.