From 922a1b3f289ce534b1c1189eb0d4796057c5c27a Mon Sep 17 00:00:00 2001
From: Andrew Duthie <andrew@andrewduthie.com>
Date: Wed, 24 Oct 2018 16:47:15 -0400
Subject: [PATCH 1/2] Editor: Flatten Inserter mapSelectToProps

---
 .../editor/src/components/inserter/index.js   | 20 +++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/packages/editor/src/components/inserter/index.js b/packages/editor/src/components/inserter/index.js
index 73a971a7de5c73..ad36eb19491e23 100644
--- a/packages/editor/src/components/inserter/index.js
+++ b/packages/editor/src/components/inserter/index.js
@@ -96,24 +96,24 @@ export default compose( [
 			getInserterItems,
 			getBlockOrder,
 		} = select( 'core/editor' );
+
 		const insertionPoint = getBlockInsertionPoint();
-		const parentId = rootClientId || insertionPoint.rootClientId;
+		if ( rootClientId === undefined ) {
+			rootClientId = insertionPoint.rootClientId;
+		}
+
 		return {
 			title: getEditedPostAttribute( 'title' ),
-			insertionPoint: {
-				rootClientId: parentId,
-				layout: rootClientId ? layout : insertionPoint.layout,
-				index: rootClientId ? getBlockOrder( rootClientId ).length : insertionPoint.index,
-			},
+			layout: rootClientId ? layout : insertionPoint.layout,
+			index: rootClientId ? getBlockOrder( rootClientId ).length : insertionPoint.index,
 			selectedBlock: getSelectedBlock(),
-			items: getInserterItems( parentId ),
-			rootClientId: parentId,
+			items: getInserterItems( rootClientId ),
+			rootClientId,
 		};
 	} ),
 	withDispatch( ( dispatch, ownProps ) => ( {
 		onInsertBlock: ( item ) => {
-			const { selectedBlock, insertionPoint } = ownProps;
-			const { index, rootClientId, layout } = insertionPoint;
+			const { selectedBlock, index, rootClientId, layout } = ownProps;
 			const { name, initialAttributes } = item;
 			const insertedBlock = createBlock( name, { ...initialAttributes, layout } );
 			if ( selectedBlock && isUnmodifiedDefaultBlock( selectedBlock ) ) {

From 6c91fbeef098d4196763ec5bebf10d98cc3d44d2 Mon Sep 17 00:00:00 2001
From: Andrew Duthie <andrew@andrewduthie.com>
Date: Fri, 26 Oct 2018 10:58:51 -0400
Subject: [PATCH 2/2] Inserter: Assign layout, index as undefined rootClientId
 fallback

---
 packages/editor/src/components/inserter/index.js | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/packages/editor/src/components/inserter/index.js b/packages/editor/src/components/inserter/index.js
index ad36eb19491e23..8a38b152dd0ace 100644
--- a/packages/editor/src/components/inserter/index.js
+++ b/packages/editor/src/components/inserter/index.js
@@ -94,20 +94,24 @@ export default compose( [
 			getBlockInsertionPoint,
 			getSelectedBlock,
 			getInserterItems,
-			getBlockOrder,
 		} = select( 'core/editor' );
 
-		const insertionPoint = getBlockInsertionPoint();
+		let index;
 		if ( rootClientId === undefined ) {
-			rootClientId = insertionPoint.rootClientId;
+			// Unless explicitly provided, the default insertion point provided
+			// by the store occurs immediately following the selected block.
+			// Otherwise, the default behavior for an undefined index is to
+			// append block to the end of the rootClientId context.
+			const insertionPoint = getBlockInsertionPoint();
+			( { rootClientId, layout, index } = insertionPoint );
 		}
 
 		return {
 			title: getEditedPostAttribute( 'title' ),
-			layout: rootClientId ? layout : insertionPoint.layout,
-			index: rootClientId ? getBlockOrder( rootClientId ).length : insertionPoint.index,
 			selectedBlock: getSelectedBlock(),
 			items: getInserterItems( rootClientId ),
+			layout,
+			index,
 			rootClientId,
 		};
 	} ),