Resolved
Reported for: Toolset Views 3.1.3
Toolset offers a Design with Toolset menu, located in the WordPress Admin Bar. When Views or Forms are present on a post or page, this menu offers links to edit those Toolset elements.
Since the WordPress 5.4 update, this menu doesn’t show these links anymore.
This issue happens due to a change in WordPress, as you can see here.
For now, you can fix the problem by adding the WordPress Admin Bar back to the wp_footer hook, instead of the new wp_body_open one.
You can do that by adding the following line of PHP to your theme’s functions.php file:
remove_action( 'wp_body_open', 'wp_admin_bar_render', 0 );