WordPress Widgets not saving after move to new server

This problem is driving me crazy!

I built an entire wordpress site on a server that I own. Just a couple days ago I moved it to another production server.

Ever since the move, none of my wordpress widgets will let me change the content and save. If I try to change the content in one of the widgets and hit the save button, the little circle will just keep spinning and it never saves it.

The only time I can get it to save is when the content is completely different than what it was when it was on the previous server.

Does anybody know what’s causing this or can provide some help?

Again, this is just the plain text/html widget that is already installed with WordPress, not a plugin.

EDIT: I just created/registered a brand new widget and it’s doing the same thing. Some content it’ll let me save and other content it won’t.