ilsalgo

I have the same problem, no wordfence and I have just clear cache.

How can I do?

Yes

Without Box: https://www.dropbox.com/s/96pce7723nkgdjh/Without.png?dl=0

With Box: https://www.dropbox.com/s/8543ei91ogs0474/with.png?dl=0

I confirm! But to return to using the plugin, I have moficare all the old articles, or is there a simpler solution?

i dont use the “Shortcode Embeds”, but simply the link at the video and Jetpack (or WordPress) embeds video.

I suppose that the problem is caused by a conflict with the plugin Jetpack by WordPress.com

My site is https://www.tecnoscimmiati.it , your plugin is temporarily disabled to avoid the problem