A temporary fix for this is to change it from an ID selector to a class…
in /wp-content/plugins/tinymce-templates/tinymce-templates.php
Around Line 207:
change to:
printf(
$button_html,
'button-tinymce-templates',
'button button-tinymce-templates',
esc_attr( $editor_id ),
esc_attr( __( 'Insert Template', 'tinymce_templates' ) ),
'dashicons dashicons-edit',
'margin-top: 3px;',
esc_html( __( 'Insert Template', 'tinymce_templates' ) )
);
in /wp-content/plugins/tinymce-templates/js/tinymce-templates.js
Around Line 11:
change to:
$('.button-tinymce-templates').bind('click', function(e){
e.preventDefault();
tinymceTemplates.get_template_list();
tinymceTemplates.open();
});