Causing customizer error

I spent all day trying to figure out why the WordPress Customizer kept throwing this error:

Notice: Trying to get property of non-object in … wp-includes/class-wp-editor.php on line 1319.

I thought it was my theme code since I was working on it. Finally, I deactivated all plugins and the error went away, and then reactivated one by one. Turned out, it was the Black Studio Tinymce widget causing the problem. Glad it wasn’t my code, but still…I wish it hadn’t taken up so much of my time tracking it down.

No idea why the plugin is doing this, but thought I would share.

https://www.ads-software.com/plugins/black-studio-tinymce-widget/