try_reduce_out_degree is eager to reverse edges without any regards to whether an edge under consideration is actually reversible. The occasional result of this is that a link in the generated plan cannot be made, because the source portal is inside a field. An example of such a bad plan is shown below (the plan suggests four successive bad links).
try_reduce_out_degree
is eager to reverse edges without any regards to whether an edge under consideration is actually reversible. The occasional result of this is that a link in the generated plan cannot be made, because the source portal is inside a field. An example of such a bad plan is shown below (the plan suggests four successive bad links).This bug comes from upstream.