I have a feature that has a fillet on it.

When I try to mirror that feature I get the error "Cannot fillet a tangent edge".

I can add a fillet to the mirror part after the fact. I get the same issue when I try to linear pattern the feature and it's fillet.

I get the exact same results(except it works) when I apply the fillets after the fact.

The problem is that I end up with 3 fillets when I should be able to do it in 1.