Thanks for the screenshot, unfortunately, I haven’t seen this issue before, is that a problem with the live editor in Page Builder? A plugin conflict test is the place to start.
Above is SiteOrigin’s video and here is my post on the same:
Resolving Plugin Conflicts
(Let me know if you want to chat over the forum or email, either is cool but it helps if we stick to one. Unfortunately, the forum doesn’t offer email to thread at the moment. I wish it did. I had it setup a little while ago but I ran into lots of issues. It’s on my list for the future.)