Published pages are blank, html is gone from rapidweaver page

I’ve posted a few years ago, and still couldn’t solve it.

I’ve been using RW for ages. And this is a new and odd problem.
I am currently running the Classic 9.2.1 on a MacOS 14.6.1.

My website is simple: bunch of html pages, created with the “html code” option. No stacks or anything. Just simple html.

Recently, I realised that some pages with code had turned completely blank in the RW file. I only realised it on the website, which was embarrassing. The page was created couple years ago, published normally and well. But as the time passed, suddenly for no reason they turned completely blank and republished without me noticing that they were blank.
I have around 200 html pages in my site and I have to check them one by one only to find out that it happened to some other pages too, randomly.

I used many themes over the years, and the issue persisted.
It also happened in few different computers: a MacBook Pro with no RW addons etc, one my regular imac.

Any idea why/how this could’ve have happened? And how can I fix it?