cursor finally working properly and removed from render_text

src/core/span.rs

@@ -39,7 +39,7 @@ impl Widget for Span {
             if self.dir.sign == Sign::Neg {
                 child_region.flip();
             }
-            painter.draw_within(child, child_region);
+            painter.widget_within(child, child_region);
         }
     }