diff --git a/timeline-chart/src/layer/time-graph-chart.ts b/timeline-chart/src/layer/time-graph-chart.ts
index fa791df..8b83eed 100644
--- a/timeline-chart/src/layer/time-graph-chart.ts
+++ b/timeline-chart/src/layer/time-graph-chart.ts
@@ -663,6 +663,7 @@ export class TimeGraphChart extends TimeGraphChartLayer {
                     if (state.data) {
                         state.data['gap'] = gap;
                     }
+                    this.addElementInteractions(gap);
                 }
             }
         } else {