Raptor Buff vs traps/shrooms/etc.

I've found that when I use the Raptor buff and walk into a Teemo minefield, you only actually get that true sight right before you step on a mine, usually too late to avoid it. Very annoying.

Since giving Teemo's shrooms more vision would be bad (NO BUFFS FOR TEEMO!), I think the Raptor buff should give the bearer trap detection, and perhaps not trigger its true sight on shrooms and Shaco boxes.