Is this a bug?

 From:  d^^b (DAVID)
2399.1 
Hello:

I draw an ellipse, and extrude it
After that, I rotate it making a copy.
The result is the first screenshot

Then, I try to get the result to a boolean-intersect operation, but this is the result. (the second one)

Is this a bug, or I´ve made any wrong step?

Thx ;-)

P.S.

The 3dm file is ready for apply the boolean-->Intersec
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