I have not been able to reproduce the bug, either, but I have found a related issue.
When I compile this ID, the variables in the optimal policy for Therapy are Do test?, Symptom, and Result of test, in this order. But when I click Reorder variables, they are shown in the reverse order. The order should be the same.
Additionally, the Reorder variables dialog displays a column containing a0, a1, a2, that should not be visible.
Finally, when the variables are reordered, OpenMarkov does not highlight in red color the optimal choices.