I'm trying to make {RyCy----:Cr------:CwCw----:cbcb----}
I make {Cy--CuCu:----CuCu:Cw--CuCu:cb--CuCu}, swap it with {CuCu--Ry:CuCu--Cr:CuCu--Cw:CuCu--cb}, and that breaks the blue crystal on the top level.
Expected behaviour: Neither crystal is cut by the swapper, therefore neither crystal should break. I should have the target shape.
Actual behaviour: the right-side crystal breaks.