Keep on improving fonts.

src/dawn/ui/UILabel.cpp

@@ -91,7 +91,7 @@ std::vector<struct ShaderPassItem> UILabel::getSelfPassItems(
     this->z
   );
   item.start = this->startQuad * QUAD_INDICE_COUNT;
-  item.count = this->quadCount * QUAD_INDICE_COUNT;
+  item.count = this->quadCount == -1 ? -1 : this->quadCount * QUAD_INDICE_COUNT;
   items.push_back(item);
   return items;
 }