WordPress appears to be auto-inserting <p> tags into my posts and not closing them. I have checked the code in the "code" view in TinyMCE, and the tags do not appear. I have turned off "Visual Editing" in my profile, checked, no unclosed <p> tags where they are not supposed to be. However, when I run the page (via URL) thru the W3 validator or view the source code of the fully generated page, the unclosed <p> tags appear in the post.
The problem this is causing is that it is breaking the page. What is worse is that I cannot fix the issue aside from completely rewriting the posts from scratch.
I have even gone as far as checking the code for the posts within the database itself and even in the data base the <p> tags do NOT show up.
I do not have an plugins that do code editing like that, and it only started happening when I went back and edited a post, which right after I submitted the edits broken the page design. I knew something was wrong because the sidebar for my site vanished.
I first thought it was some auto-completion thing with TinyMCE, but since the weird code changes don't show up in the database, I figure it may not be TinyMCE.