You're right - I'll remove that now until we can get it more performant or drop it altogether. This wasn't something we caught during testing. I appreciate the feedback!
https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/...
If you check the source (not the DOM) the actual content is loaded in `<div hidden="" id="S:0"> ...` which is then moved/copied into the proper main content div in the DOM using a JS event it seems.