Fixed Sign Text Disappearing if Next to a Button pressed by Auto Loader

BauSystem_15/src/de/steamwar/bausystem/world/AutoLoader_15.java

@@ -44,7 +44,7 @@ class AutoLoader_15 {
                 location.clone().add(0, 0,-1)
         };
         for (Location value : locations) {
-            if (!value.getBlock().getType().isSolid()) continue;
+            if (!value.getBlock().getType().isOccluding()) continue;
             BlockData data = value.getBlock().getBlockData();
             value.getBlock().setType(Material.BARRIER, true);
             value.getBlock().setBlockData(data, true);