potential conflict with Advanced Custom Fields plugin

Just tried in three different wordpress websites, each running Advanced Custom Fields plugin and at least one SZ-Google module – I used the youtube module:
the plugin works fine, the TinyMCE button to automatically create SZ shortcode within the content too, but after filling up links and options when you click confirm nothing happens, nor appears any error message through the Chrome inspector.
Deactivating ACF plugins does the job, and the TinyMCE button works fine then.

https://wordpress.org/plugins/sz-google/