When you have a large/complex folder list open in the Catalog pane and you add a folder to the project, Pro then proceeds to change the view (scrolls down or something; it's variable) so you are no longer looking at the same folders.
Say you have 250 folders alphabetically sorted and you add one from M - Pro will scroll to the bottom of the pane and now you will be looking at the Z's. If you wanted to add another M you will have to scroll back to where you were.
Stop that. Just keep the view as it was before the folder was added.
Thank you.