WP5.3 admin image edit link (pencil icon) opening in _BLANK instead of iframe

Hey guys!
Just upgraded this morning to WP5.3 and MB stuff to their latest versions and noticed the following:

I do use IMAGE_ADVANCED to provide a metabox for a custom gallery inside my posts.

Everything works as expected, however — when you move the mouse over the thumbnail — the EDIT LINK (the little pencil icon) opens the image edit screen on a _BLANK window/tab, instead of opening on the traditional iframe as before.

The same happens everywhere, whenever I use IMAGE uploads metaboxes. For example, I have a custom metabox to upload the website logo on the SETTINGS PANEL extension, and, clicking on the PENCIL icon at the image there, acts the same. Brings a new window/tab to edit the image instead of the traditional super quick iframe window.

Is this WP5.3 related? Or is this some change made by purpose on latest metabox version?

I see no errors on the console and — comparing the HREF info of the pencil icon with WP5.2.4 it is exactly the same.

Can you check please?
Thanks.

G.