Editor Screwy & Widgets Inactive After Updates

I recently had to upgrade WP and the editor is warping out. I can’t right click select anymore and when I try to use the styles buttons or particularly the link button, add the link and click save, it no longer saves.

Instead, it refreshes the whole damn thing back to the index section itself.

Anyone know what the problem might be? It’s not the plugins per se, it was fine til that latest update. Now the editor doesn’t work. I did deactivate tinymcadvanced and tried again on the base editor and still just refreshes to the page list and doesn’t do what it’s supposed to – add the link and stay put.

Then the side links no longer pop out, it’s straight click and total page refresh…and widgets for the sidebar aren’t even working. On the site, yes, but I’m talking dashboard widget area. No clicking on footer widget section, it doesn’t do squat. Doesn’t even open, it’s not clickable whatsoever so I can’t edit the footer widgets either way.

Need help, this is not going to fly. Can I just go back to the previous version since this one has nutted up and doesn’t seem to play well with others? Thanks!