X will not allow me to save changes in customizer

I make all the changes in customizer and save multiple times, and when I go to close it I get the white error message:

“Do you want to leave this site? (Changes may not be saved)”

I can’t close the customizer without losing changes.

Help please:

http://5cc.0c5.myftpupload.com/

Hi There,

Make sure X and Cornerstone are updated to the latest versions.

If you are already with the latest versions, uou could try testing for a plugin conflict. You can do this by deactivating all third party plugins, and seeing if the problem remains. If it’s fixed, you’ll know a plugin caused the problem, and you can narrow down which one by reactivating them one at a time.

Let us know how it goes!