Can't freely resize an object with Selection Tool anymore?

I've noticed recently on Adobe Illustrator that I'm not able to resize an object or text box as freely as I used to. Before, I could use the Selection Tool (V) to click on the object, line up my cursor with the corner, then Shift + drag to the size I want. Now it seems like I can't resize that way anymore. I've looked around the Help articles but I'm not sure how to work around this change. I know that I can type in exact dimensions but that's not always necessary or convenient. Any help from the community would be appreciated!