By default the first condition has a hidden "or" compare type, but by shuffling around the conditions it can have an "and" as well. Then the IsAllFulfilled logic does not work right. It should ignore the setting of the first condition and always consider it to be "or":

--- control.lua.orig    2021-01-06 01:29:00.000000000 +0100
+++ control.lua 2021-01-06 11:19:55.010280729 +0100
@@ -65,7 +65,7 @@
         for i = #wait_conditions, 1, -1 do
             local wait_condition = wait_conditions[i]
             and_result = and_result and IsFulfilled(train, station, wait_condition)
-            if wait_condition.compare_type == "or" then
+            if i == 1 or wait_condition.compare_type == "or" then
                 if and_result then
                     return true
                 else

Thank you