went through this already before, its origin comparisons instead of contents checks. Thing is, if a contents is created on every ent creation its difficult to free. you wind up with stale bbox's everywhere.
its easier to gank math done by origin calcs then it is 'was person in box' checks.
that's old news. inf, you should know, you ever wonder why the flags go 'thump' and you don't pick em up?