Move story var resetting so that it runs everytime the user enters the ending selection menu.

Fix list copying to work as intended

game/src/chapter_select.rpy

@@ -42,17 +42,7 @@ define ending_4_tuple = [
 
 
 label chapter_select:
-    python:
-        quick_menu = False # Hides bottom quick menu UI
-
-        # Reset story vars. Not that it terribly matters.
-        anonscore = 0
-        fangscore = 0
-        wingStory = False
-
-        chapter_list = base_chapter_list
-        chapter_list_index = 0
-        chapter_list_length = get_chapter_list_length()
+    $ quick_menu = False # Hides bottom quick menu UI
 
     camera:
         yanchor 0.0 xanchor 0.0 rotate None zoom 1.0
@@ -73,6 +63,19 @@ label chapter_select:
 
 label chapter_select_go_back:
 
+    # Reset story vars. Not that it terribly matters, but just in case it avoids bugs.
+    python:
+        anonscore = 0
+        fangscore = 0
+        wingStory = False
+
+        chapter_list = base_chapter_list.copy()
+        chapter_list_index = 0
+        chapter_list_length = get_chapter_list_length()
+        ending_route_number = None
+        ending_chapters_determined = False
+        current_chapter = chapter_list[chapter_list_index]
+
     menu:
         "What ending do you want to lock to?"
 

game/src/chapter_variables.rpy

@@ -12,7 +12,7 @@ define ending_routes = {
 }
 
 # The working list the game references to determine the chapters to use. Ending chapters are added to this list when determined.
-default chapter_list = base_chapter_list
+default chapter_list = base_chapter_list.copy()
 
 # Default vars reset when a new game starts, so no biggie.