Error drawn chart

[WilliamStone]

Hi, It seems the following chart is error drawn:

a=>operation: a
b=>operation: b
c=>condition: yes or no
d=>operation: d
e=>operation: e
f=>operation: f

a->b(right)->c
c(yes, right)->e
c(no, top)->d  // top not recognized; it seems that only 1 direction instruction of 2 branches is valid
e(top)->f        // top line is drawn through operation box

The result chart is:

[adrai]

The algorithm always tries to go to the bottom right