Classic editor content is being ignored

We’ve had trouble with this plugin ignoring content using the classic editor. Beaver Builder is active on our site, but we don’t want to be forced to use it for all of our popups.

There’s a line in WP_Popup->footer that checks for the existence of FLBuilderModel::is_builder_enabled but doesn’t call it. Adding the function call as another condition has fixed the issue for us, like so:

...
if ( class_exists( 'FLBuilderModel' ) && method_exists( FLBuilderModel, 'is_builder_enabled' ) && FLBuilderModel::is_builder_enabled() ) {
...

Can this be included as a fix in the next update?