After the X Pro 2.1.x updates, the backend page editor now gets uncaught reference errors that breaks the layout and some functionality. The console is throwing this error from the
This error is now persistent even after reverting back to the stable X Pro version of
2.0.4. Clearing caches does not help, which is odd since this did not start until after the update, but is now persistent regardless of version being used.
Any help on a fix would be appreciated, thanks!