As of 13w06a, entity hitboxes (F3 + B to show them) now display entity eye level in red... Except that dropped items don't have eyes and therefore they can't see! So they shouldn't have red lines, unlike mobs.
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[media][media]
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Can't reproduce
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You need to press F3 and B at the same time!
kumasasa
Confirmed.
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Maybe should I open a new topic for the other issue ? EDIT: done
Nathan Adams
Every entity has this. There are no exceptions.
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It's fixed in 14w10c. Can you change ticket status?
kumasasa
... except the exception from the exception...