[macOS Big Sur 11.1, Illustrator 25.1]

In all previous versions of Illustrator, once you manually re-size and re-position the Save as dialog box, it stays that way -- at least until Illustrator quits. Its default size now it is tiny and unmanageable, and I have to re-size it every single time I save a file. Furthermore, it always defaults to the local user Documents folder, instead of the document's original folder. Finally, the entire file name AND EXTENSION are highlighted, when it always used to be just the file name. Change that all back, please.