Fixed transitions in controls and credits screens, fixed slight text cropping in credits screen, fixed crash when changing the scene

Data/Scripts/016_UI/001_Non-interactive UI/002_UI_Controls.rb

@@ -66,8 +66,11 @@ class ButtonEventScene < EventScene
     last_screen = [@label_screens.max, @key_screens.max].max
     if @current_screen >= last_screen
       # End scene
+      $game_temp.background_bitmap = Graphics.snap_to_bitmap
       Graphics.freeze
+      @viewport.color = Color.new(0, 0, 0, 255)   # Ensure screen is black
       Graphics.transition(8, "fadetoblack")
+      $game_temp.background_bitmap.dispose
       scene.dispose
     else
       # Next screen