Button doesn't show with black studio tinymce widget

Hello,

I have a lot of plugins running, including
siteorigin- page builder
black studio tinymce

With blackstudio tinymce enabled the button doesn’t show. If I hook the button_adding to init instead of admin_head, the button shows.

Additionally the dropdown is empty. 3 hours of ajax-learning later it seems like getJSON is ansyncronously processed so that at the time “return value” is fired there is no value to return. AJAX request gives a standard 304 so this shouldn’t be the problem.

As I couldn’t get it to work I just copied the json data into the plugin.php and hooked it to init.

The possibilities are awesome!

Thank you for the plugin.

https://www.ads-software.com/plugins/wp-shortcode-helper/