[_ck_]

Actually I may be wrong about this.

I dug through the default filters and I see this:

add_filter(‘pre_post’, ‘balanceTags’);

Does balancetags == auto-close tags?

Looking at the function it would seem to be so.

Perhaps I have a plugin conflict or does this behaviour exist on even on a default install?

added: I just tested here and yup, it doesn’t auto-close