[fix] Drag events not working on view mode change

- #61

src/index.js

@@ -581,11 +581,7 @@ export default class Gantt {
             return is_dragging || is_resizing_left || is_resizing_right;
         }
 
-        $.on(
-            this.layers.bar,
-            'mousedown',
-            '.bar-wrapper, .handle',
-            (e, element) => {
+        $.on(this.$svg, 'mousedown', '.bar-wrapper, .handle', (e, element) => {
             const bar_wrapper = $.closest('.bar-wrapper', element);
 
             if (element.classList.contains('left')) {
@@ -617,8 +613,7 @@ export default class Gantt {
                 $bar.owidth = $bar.getWidth();
                 $bar.finaldx = 0;
             });
-            }
-        );
+        });
 
         $.on(this.$svg, 'mousemove', e => {
             if (!action_in_progress()) return;