boolop lpe performance and correctness problems

[bbyak]

In the attached file, at the top there are two identical complex path made out of text: black and green. The black one has a boolop lpe intersecting it with the green one. As you can see, many letters seem to be unioned instead of intersect, o's are filled, etc. Also, switching boolop type takes many seconds. At bottom, the same two paths are intersected with the standard Path > Intersect which is more correct and worked faster.