diff --git a/DoorShuffle.py b/DoorShuffle.py
index aac435ef..43f50458 100644
--- a/DoorShuffle.py
+++ b/DoorShuffle.py
@@ -3405,7 +3405,7 @@ def find_accessible_entrances(world, player, builder):
     visited_entrances = []
 
     # Add Sanctuary as an additional entrance in open mode, since you can save and quit to there
-    if world.mode[player] == 'open' and world.get_region('Sanctuary', player).dungeon.name == builder.name and 'Sanctuary' not in entrances:
+    if not world.is_dark_chapel_start(player) and world.get_region('Sanctuary', player).dungeon.name == builder.name and 'Sanctuary' not in entrances:
         entrances.append('Sanctuary')
         visited_entrances.append('Sanctuary')
         regs.remove(world.get_region('Sanctuary', player))
diff --git a/Doors.py b/Doors.py
index defdcbf0..c5519d13 100644
--- a/Doors.py
+++ b/Doors.py
@@ -1516,7 +1516,7 @@ def create_doors(world, player):
 
     # static portal flags
     world.get_door('Sanctuary S', player).dead_end(allowPassage=True)
-    if world.mode[player] == 'open' and world.shuffle[player] not in ['lean', 'swapped', 'crossed', 'insanity']:
+    if not world.is_dark_chapel_start(player) and world.shuffle[player] not in ['lean', 'swapped', 'crossed', 'insanity']:
         world.get_door('Sanctuary S', player).lw_restricted = True
     world.get_door('Eastern Hint Tile Blocked Path SE', player).passage = False
     world.get_door('TR Big Chest Entrance SE', player).passage = False
diff --git a/DungeonGenerator.py b/DungeonGenerator.py
index 39cc374a..d5b0dafd 100644
--- a/DungeonGenerator.py
+++ b/DungeonGenerator.py
@@ -1360,7 +1360,7 @@ def create_dungeon_builders(all_sectors, connections_tuple, world, player, dunge
         for name, builder in dungeon_map.items():
             calc_allowance_and_dead_ends(builder, connections_tuple, world, player)
 
-        if world.mode[player] == 'open' and world.shuffle[player] not in ['lean', 'swapped', 'crossed', 'insanity']:
+        if not world.is_dark_chapel_start(player) and world.shuffle[player] not in ['lean', 'swapped', 'crossed', 'insanity']:
             sanc = find_sector('Sanctuary', candidate_sectors)
             if sanc:  # only run if sanc if a candidate
                 lw_builders = []
diff --git a/OverworldShuffle.py b/OverworldShuffle.py
index 5430e175..c0d17a1e 100644
--- a/OverworldShuffle.py
+++ b/OverworldShuffle.py
@@ -1049,9 +1049,13 @@ def shuffle_tiles(world, groups, result_list, do_grouped, forced_flips, player):
 
         # tile shuffle happens here
         removed = []
-        if 0 < undefined_chance < 100:
-            for group in groups:
-                if group[0] in nonflipped_groups or (group[0] not in flipped_groups and random.randint(1, 100) > undefined_chance):
+        for group in groups:
+            if group[0] in nonflipped_groups:
+                removed.append(group)
+            else:
+                if group[0] in flipped_groups or undefined_chance >= 100:
+                    continue
+                if undefined_chance == 0 or random.randint(1, 100) > undefined_chance:
                     removed.append(group)
 
         # save shuffled tiles to list