Fix some stuff related to CRIU

SpigotCore/SpigotCore_Main/src/de/steamwar/core/WorldEditRendererCUIEditor.java

@@ -46,6 +46,15 @@ public class WorldEditRendererCUIEditor implements Listener {
         }
     }
 
+    @EventHandler
+    public void onCRIUSleep(CRIUSleepEvent event) {
+        for (Type type : Type.values()) {
+            type.materialCache.clear();
+            type.widthCache.clear();
+        }
+    }
+
+
     @AllArgsConstructor
     public enum Type {
         SELECTION("cui_selection_material", "cui_selection_width", Material.PURPLE_CONCRETE, Width.MEDIUM),