From fd28d0a122df212a10dd2ef5721473cf1e54dc87 Mon Sep 17 00:00:00 2001
From: Dominik Moritz <domoritz@gmail.com>
Date: Tue, 16 Jul 2019 12:44:31 +0200
Subject: [PATCH] Finalize Vega view before creating a new one

---
 packages/vega4-extension/src/index.ts | 4 ++++
 packages/vega5-extension/src/index.ts | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/packages/vega4-extension/src/index.ts b/packages/vega4-extension/src/index.ts
index 3ab4401e88da..26de8fb4930d 100644
--- a/packages/vega4-extension/src/index.ts
+++ b/packages/vega4-extension/src/index.ts
@@ -85,6 +85,10 @@ export class RenderedVega extends Widget implements IRenderMime.IRenderer {
     this.node.textContent = '';
     this.node.appendChild(el);
 
+    if (this._result) {
+      this._result.view.finalize();
+    }
+
     this._result = await vega.default(el, spec, {
       actions: true,
       defaultStyle: true,
diff --git a/packages/vega5-extension/src/index.ts b/packages/vega5-extension/src/index.ts
index 5e5634c93a05..d9bd96b5a313 100644
--- a/packages/vega5-extension/src/index.ts
+++ b/packages/vega5-extension/src/index.ts
@@ -85,6 +85,10 @@ export class RenderedVega extends Widget implements IRenderMime.IRenderer {
     this.node.textContent = '';
     this.node.appendChild(el);
 
+    if (this._result) {
+      this._result.view.finalize();
+    }
+
     this._result = await vega.default(el, spec, {
       actions: true,
       defaultStyle: true,