generative modeling for Rhino
select in rhino and use command flip?
When you use the Normal Plane component you are not using enough criteria to orient a plane sufficiently. This allows Grasshopper some freedom when picking the direction of X and Y.
I would suggest using something like the Line Line Plane Method. You don't even need to use anymore components than you already have.
what a important hint!
In case must all of the geometry only in x-y direction oriented. so I modified the input-plane and now works everything great.