Cerber conflicts with WordPress Customizer

I noticed that my font size setting in the Appearance-Customiser was not working, i.e. the slider moves and text size changes but the number doesn’t update and it’s hard to make accurate changes.

I narrowed the problem to Cerber by deactivating several plugins and the problem reappeared only after activating WP Cerber.

I really like your plugin and have recommended it to several web developers in WP Elevation and Beaver Builder groups, so please fix this issue asap.

I’m using WP 4.9 and Beaver Builder (Child Theme).