As I'm illustrating on Illustrator, I cannot scale images or text suddenly. I would uninstall and re-install the program to get rid of the bug, but it keep returning randomly. I do not hit or click on any key or button to make this happen. Every time is comes back on its own unprovoked.

It happens on both my work and home macbook.
A text box, for example would be too small for the copy inside it, but I cannot expand the box because the box seems to be frozen in its exact shape.
I can drag the box anywhere in the document, but I cannot scale it.