I’m running Beaver Builder 1.6.2 and I have a problem with embedded video. I have embedded video on the site since before using Page Builder, but when I try to update the embedded video it just gets stuck in thinking mode, even if I just edit the existing embedded video code by removing and adding back the same character.
Hey Hans,
Welcome to the BB forums! 
There may be a JS conflict going on. Let’s have you go through the plugin deactivation route, i.e., disable all plugins and test the Beaver Builder while reactivating each to determine if the issue is related to a 3rd party plugin. Let us know how it goes!
Ben