Just an FYI. Updated to Beta 6 on one of my sites, and every page started giving me this (whether they were created with a previous beta, or prior production build):

It went back to normal with a cache clear.
I’m assuming it’s because you changed something in the builder code that had been cached, and this might not affect users in the regular launch. But just sharing so you’re aware, because it scared the $h!* out of me for a minute. (I was living dangerously, and had created a new page on a staging site that I wanted to eventually use on a production site… but hadn’t exported it yet
)