And it’s not consistent and predictable either. Or I could “adjust for the sights being off a bit”. :)
It's pretty unusual to experience any difficulties with posting in HTML on this site. Whenever I've had trouble in the past, it has always turned out to be something I'm doing (or not doing) with the code.
That said, something does appear to have changed with the way FR displays pages embedded with HTML. In the last couple of months I've noticed that the software isn't automatically wrapping longish URLs as it normally does.
Instead of breaking a long URL into chunks so that it fits the page, FR is shrinking the whole page to fit the URL. It's doing the same thing with oversized images. Also, quite a few images are no longer displaying at all.
It’s perfectly predictable to have either no HTML or all HTML. How else would you understand what part is supposed to be taken as HTML and what isn’t?