From a9478d967ff08a1f43f529afb78cda8d70488e33 Mon Sep 17 00:00:00 2001
From: bubkoo <bubkoo.wy@gmail.com>
Date: Wed, 11 Dec 2019 02:30:08 +0800
Subject: [PATCH] fix: fix z-index bug when use size-sensor

---
 packages/x6/src/graph/viewport-manager.ts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/packages/x6/src/graph/viewport-manager.ts b/packages/x6/src/graph/viewport-manager.ts
index bdfe880b21a..ea682a7340c 100644
--- a/packages/x6/src/graph/viewport-manager.ts
+++ b/packages/x6/src/graph/viewport-manager.ts
@@ -300,6 +300,7 @@ export class ViewportManager extends BaseManager {
       if (this.graph.dialect === 'svg') {
         const svg = (this.view.getDrawPane() as SVGGElement).ownerSVGElement
         if (svg != null) {
+          svg.style.position = 'relative'
           svg.style.minWidth = `${Math.max(1, width)}px`
           svg.style.minHeight = `${Math.max(1, height)}px`
           svg.style.width = '100%'
@@ -307,6 +308,7 @@ export class ViewportManager extends BaseManager {
         }
       } else {
         const stage = this.view.getStage()!
+        stage.style.position = 'relative'
         stage.style.minWidth = `${Math.max(1, width)}px`
         stage.style.minHeight = `${Math.max(1, height)}px`
       }