2 files changed, 9 insertions, 1 deletions
diff --git a/src/client/views/collections/CollectionDockingView.tsx b/src/client/views/collections/CollectionDockingView.tsx
index 39a52fb6d..d2c065417 100644
--- a/src/client/views/collections/CollectionDockingView.tsx
+++ b/src/client/views/collections/CollectionDockingView.tsx
@@ -108,6 +108,7 @@ export class CollectionDockingView extends CollectionSubView(doc => doc) {
     }
 
     @undoBatch
+    @action
     public static ReplaceTab(document: Doc, panelName: string, stack: any, addToSplit?: boolean): boolean {
         const instance = CollectionDockingView.Instance;
         if (!instance) return false;
@@ -140,8 +141,15 @@ export class CollectionDockingView extends CollectionSubView(doc => doc) {
     //  Creates a split on any side of the docking view based on the passed input pullSide and then adds the Document to the requested side
     //
     @undoBatch
+    @action
     public static AddSplit(document: Doc, pullSide: string, stack?: any, panelName?: string) {
         if (document._viewType === CollectionViewType.Docking) return CurrentUserUtils.openDashboard(Doc.UserDoc(), document);
+
+        const tab = Array.from(CollectionDockingView.Instance.tabMap).find(tab => tab.DashDoc === document);
+        if (tab) {
+            tab.header.parent.setActiveContentItem(tab.contentItem);
+            return true;
+        }
         const instance = CollectionDockingView.Instance;
         if (!instance) return false;
         const docContentConfig = CollectionDockingView.makeDocumentConfig(document, panelName);
diff --git a/src/client/views/collections/CollectionMenu.tsx b/src/client/views/collections/CollectionMenu.tsx
index abad23e0d..34a1c0697 100644
--- a/src/client/views/collections/CollectionMenu.tsx
+++ b/src/client/views/collections/CollectionMenu.tsx
@@ -400,7 +400,7 @@ export class CollectionViewBaseChrome extends React.Component<CollectionMenuProp
     pinWithView = (targetDoc: Opt<Doc>) => {
         if (targetDoc) {
             TabDocView.PinDoc(targetDoc, false);
-            const activeDoc = PresBox.Instance.childDocs[PresBox.Instance.childDocs.length - 1];
+            const activeDoc = PresBox.Instance?.childDocs[PresBox.Instance?.childDocs.length - 1];
             if (targetDoc.type === DocumentType.PDF || targetDoc.type === DocumentType.RTF || targetDoc.type === DocumentType.WEB || targetDoc._viewType === CollectionViewType.Stacking) {
                 const scroll = targetDoc._scrollTop;
                 activeDoc.presPinView = true;