Preconditions:

• Safari web browser

Steps to reproduce:

1. Login to back office.
2. Go to Content / Content structure.
3. Click on "edit" button on the right side menu.
4. Being on page builder site, firstly click on "Send to review" and then "Publish later" button.
5. Observe carefully animation of displaying popups.

Actual result:

Watch gif please (please note that on gif is comparison of behaviour on 2 web browsers - the first one is Opera, the second one Safari).

Link: https://recordit.co/q6H1HP8mOx

After clicking on "Send to review" or "Publish later" button popup animation on Safari web browser is completely different than on web browsers based on chromium.

Expected result:

Displaying popups in page builder on Safari should work the same as on chromium web browsers.