Merge pull request #10264 from electron/fix-sandbox-crash-on-background-tab

Fix sandbox crash when opening a background tab

lib/browser/api/browser-window.js

@@ -43,8 +43,9 @@ BrowserWindow.prototype._init = function () {
                                             userGesture, left, top, width,
                                             height) => {
     let urlFrameName = v8Util.getHiddenValue(webContents, 'url-framename')
-    if ((disposition !== 'foreground-tab' && disposition !== 'new-window') ||
-        !urlFrameName) {
+    if ((disposition !== 'foreground-tab' && disposition !== 'new-window' &&
+         disposition !== 'background-tab') || !urlFrameName) {
+      event.preventDefault()
       return
     }