Only add backupregions if whitelisting

worldedit-core/src/main/java/com/fastasyncworldedit/core/util/WEManager.java

@@ -147,12 +147,14 @@ public class WEManager {
                 player.printError(TextComponent.of("Missing permission " + "fawe." + manager.getKey()));
             }
         }
+        if (isWhitelist) {
             regions.addAll(backupRegions);
-        if (!masks.isEmpty() && isWhitelist) {
+            if (!masks.isEmpty()) {
                 player.setMeta("lastMask", masks);
-        } else if (isWhitelist) {
+            } else {
                 player.deleteMeta("lastMask");
             }
+        }
         return regions.toArray(new Region[0]);
     }