Mutation Events Deprecation Errors in Browser Console

Hi,

The plugin still generates JS deprecation notices in the browser console (in the backend, on post edit screens):

[Deprecation] Listener added for a 'DOMNodeInserted' mutation event. This event type is deprecated, and will be removed from this browser very soon. Usage of this event listener will cause performance issues today, and represents a large risk of future site breakage. Consider using MutationObserver instead. See https://chromestatus.com/feature/5083947249172480 for more information.

I found a previous submission with the same topic:
https://wordpress.org/support/topic/about-mutationevent/
It has been closed, but we still see the same issue with the most recent plugin version.

Thanks in advance for taking another look into this.