Randomly losing all HTML mark up on some resources

I am using Evo 1.0.8 and TinyMCE 3.3.5.1.

Randomly my pages seem to lose their HTML markup - ie all the p, h1, strong, etc tags. The text remains, but just in one big unformatted block.

This seems to occur after saving the resource after basic edits are made.

Would anyone know why this is occurring and how to fix it? [ed. note: meltingdog last edited this post 13 years, 3 months ago.]

Does it ever happen if you aren't using TinyMCE?