Regenerate the schedule when regenerating rails too

flatland/envs/rail_env.py

@@ -321,7 +321,7 @@ class RailEnv(Environment):
 
         # todo change self.agents_static[0] with the refactoring for agents_static -> issue nr. 185
         # https://gitlab.aicrowd.com/flatland/flatland/issues/185
-        if regenerate_schedule or self.agents_static[0] is None:
+        if regenerate_schedule or regenerate_rail or self.agents_static[0] is None:
             agents_hints = None
             if optionals and 'agents_hints' in optionals:
                 agents_hints = optionals['agents_hints']