diff --git a/js/state/frameStateUtil.js b/js/state/frameStateUtil.js
index f27316d924d..00161dbdb4a 100644
--- a/js/state/frameStateUtil.js
+++ b/js/state/frameStateUtil.js
@@ -284,7 +284,7 @@ const tabFromFrame = (frame) => {
  * Adds a frame specified by frameOpts and newKey and sets the activeFrameKey
  * @return Immutable top level application state ready to merge back in
  */
-function addFrame (frames, tabs, frameOpts, newKey, partitionNumber, activeFrameKey) {
+function addFrame (frames, tabs, frameOpts, newKey, partitionNumber, activeFrameKey, insertionIndex) {
   const url = frameOpts.location || config.defaultUrl
 
   // delayedLoadUrl is used as a placeholder when the new frame is created
@@ -352,22 +352,6 @@ function addFrame (frames, tabs, frameOpts, newKey, partitionNumber, activeFrame
     history: []
   }, frameOpts))
 
-  // Find the closest index to the current frame's index which has
-  // a different ancestor frame key.
-  let insertionIndex = findIndexForFrameKey(frames, frameOpts.parentFrameKey)
-  if (insertionIndex === -1) {
-    insertionIndex = frames.size
-  }
-  while (insertionIndex < frames.size) {
-    ++insertionIndex
-    if (!isAncestorFrameKey(frames, frames.get(insertionIndex), frameOpts.parentFrameKey)) {
-      break
-    }
-  }
-  if (isFrameKeyPinned(frames, frameOpts.parentFrameKey)) {
-    insertionIndex = 0
-  }
-
   return {
     tabs: tabs.splice(insertionIndex, 0, tabFromFrame(frame)),
     frames: frames.splice(insertionIndex, 0, frame),
@@ -505,7 +489,9 @@ function getFrameTabPageIndex (frames, frameProps, tabsPerTabPage) {
 module.exports = {
   query,
   find,
+  isAncestorFrameKey,
   isFrameKeyActive,
+  isFrameKeyPinned,
   getFrameIndex,
   getFrameDisplayIndex,
   getActiveFrameIndex,
diff --git a/js/stores/windowStore.js b/js/stores/windowStore.js
index 07605995dec..d7df0c08988 100644
--- a/js/stores/windowStore.js
+++ b/js/stores/windowStore.js
@@ -154,7 +154,9 @@ const addToHistory = (frameProps) => {
   return history.slice(-10)
 }
 
-const newFrame = (frameOpts, openInForeground) => {
+const newFrame = (frameOpts, openInForeground, insertionIndex) => {
+  const frames = windowState.get('frames')
+
   if (frameOpts === undefined) {
     frameOpts = {}
   }
@@ -185,8 +187,31 @@ const newFrame = (frameOpts, openInForeground) => {
   } else if (frameOpts.isPartitioned) {
     nextPartitionNumber = incrementPartitionNumber()
   }
-  windowState = windowState.merge(FrameStateUtil.addFrame(windowState.get('frames'), windowState.get('tabs'), frameOpts,
-    nextKey, nextPartitionNumber, openInForeground ? nextKey : windowState.get('activeFrameKey')))
+
+  // Find the closest index to the current frame's index which has
+  // a different ancestor frame key.
+  if (!insertionIndex) {
+    insertionIndex = FrameStateUtil.findIndexForFrameKey(frames, frameOpts.parentFrameKey)
+  }
+  if (insertionIndex === -1) {
+    insertionIndex = frames.size
+  }
+  while (insertionIndex < frames.size) {
+    ++insertionIndex
+    if (!FrameStateUtil.isAncestorFrameKey(frames, frames.get(insertionIndex), frameOpts.parentFrameKey)) {
+      break
+    }
+  }
+  if (FrameStateUtil.isFrameKeyPinned(frames, frameOpts.parentFrameKey)) {
+    insertionIndex = 0
+  }
+
+  windowState = windowState.merge(
+    FrameStateUtil.addFrame(
+      frames, windowState.get('tabs'), frameOpts,
+    nextKey, nextPartitionNumber, openInForeground ? nextKey : windowState.get('activeFrameKey'), insertionIndex)
+  )
+
   if (openInForeground) {
     const activeFrame = FrameStateUtil.getActiveFrame(windowState)
     updateTabPageIndex(activeFrame)