2D tracing

I have 2d sprite character, I want him to open a “treasure chest” that is also a sprite.

At first using the sprite I couldn’t get the trace to hit the sprite. Then I added a box component to the blueprint, and the “treasure chest” now opens.

Problem is it won’t work unless I hit the box component, which I see hit it(but is invisible) and then afterwards hit the “treasure chest” sprite sticking out of the box component, which it doesn’t hit actually…the line goes right through it but it triggers the hit event anyhow every time. Anyone know why this is happening?