2 files changed, 5 insertions, 1 deletions
diff --git a/src/client/views/collections/CollectionDockingView.tsx b/src/client/views/collections/CollectionDockingView.tsx
index 699a0f966..2eaa284cc 100644
--- a/src/client/views/collections/CollectionDockingView.tsx
+++ b/src/client/views/collections/CollectionDockingView.tsx
@@ -21,6 +21,7 @@ import { CollectionSubView, SubCollectionViewProps } from "./CollectionSubView";
 import { CollectionViewType } from './CollectionView';
 import { TabDocView } from './TabDocView';
 import React = require("react");
+import { stat } from 'fs';
 const _global = (window /* browser */ || global /* node */) as any;
 
 @observer
@@ -147,6 +148,7 @@ export class CollectionDockingView extends CollectionSubView(doc => doc) {
 
         if (!pullSide && stack) {
             stack.addChild(docContentConfig, undefined);
+            stack.setActiveContentItem(stack.contentItems[stack.contentItems.length - 1]);
         } else {
             const newItemStackConfig = { type: 'stack', content: [docContentConfig] };
             const newContentItem = instance._goldenLayout.root.layoutManager.createContentItem(newItemStackConfig, instance._goldenLayout);
diff --git a/src/client/views/collections/collectionFreeForm/CollectionFreeFormView.tsx b/src/client/views/collections/collectionFreeForm/CollectionFreeFormView.tsx
index 89e0450d7..2783011cf 100644
--- a/src/client/views/collections/collectionFreeForm/CollectionFreeFormView.tsx
+++ b/src/client/views/collections/collectionFreeForm/CollectionFreeFormView.tsx
@@ -927,7 +927,9 @@ export class CollectionFreeFormView extends CollectionSubView<PanZoomDocument, P
     }
 
     setScaleToZoom = (doc: Doc, scale: number = 0.75) => {
-        this.Document[this.scaleFieldKey] = scale * Math.min(this.props.PanelWidth() / NumCast(doc._width), this.props.PanelHeight() / NumCast(doc._height));
+        const pw = this.props.PanelWidth();
+        const ph = this.props.PanelHeight();
+        pw && ph && (this.Document[this.scaleFieldKey] = scale * Math.min(pw / NumCast(doc._width), ph / NumCast(doc._height)));
     }
 
     @computed get libraryPath() { return this.props.LibraryPath ? [...this.props.LibraryPath, this.props.Document] : []; }