I also have the problem with the Embedded Video PB button in Page Builder. I have never used Page Builder before so I have 1.3.3 installed.
Do you just copy the Vimeo code and place it in the pop up box after you select the Embed Video Widget?
I’m having the same problem with the “Embedded Video PB” widget. Using Vimeo I copy the embed code from my video file hosted there, and paste into the box that pops up after I click on the Page Builder Embed Video button. Am I doing this right.
Also I can’t seem to get the videos to expand to the width of the web page anymore, they appear much smaller and have less of an impact on the page.