Have you tried minimizing it (top right double arrows), then expanding (and then dragging it out of the constraining panel?)
Also, try docking it with another panel that's the width you want, then dragging it back out again.
Sometimes I'll get one panel that isn't playing nice and I don't want to do a Workspace Reset as other panels are where I want them for a particular job - I forget which of these works, but usually* it will resize with one of these.
* I've never had one that didn't reset with Workspace Reset. You're mileage may vary.
I downloaded it but it wont reamin open for me to run the program. Everything was working fine until i logged out of my personal and into my work account. I just got off with adobe support and they were having issues with it aswell. A superviosor is supposed to reach out to me to see if they can help