diff --git a/js/windowMgr.js b/js/windowMgr.js
index dd78dcc9..59d71970 100644
--- a/js/windowMgr.js
+++ b/js/windowMgr.js
@@ -466,7 +466,7 @@ function doCreateMainWindow(initialUrl, initialBounds, isCustomTitleBar) {
 
                 // only allow window.open to succeed is if coming from same host,
                 // otherwise open in default browser.
-                if ((newWinHost === mainWinHost || newWinUrl === emptyUrlString) && dispositionWhitelist.includes(disposition)) {
+                if ((newWinHost === mainWinHost || newWinUrl === emptyUrlString || (newWinHost.indexOf(mainWinHost) !== -1 && frameName !== "")) && dispositionWhitelist.includes(disposition)) {
                     // handle: window.open
 
                     if (!frameName) {
diff --git a/package.json b/package.json
index acd7a6d3..21d74d37 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "Symphony",
   "productName": "Symphony",
-  "version": "4.4.2",
+  "version": "4.5.0",
   "clientVersion": "1.54",
   "buildNumber": "0",
   "description": "Symphony desktop app (Foundation ODP)",