STR: 1. Open a new e10s window and non-e10s window. 2. Drag a tab from from the non-e10s window to the e10s window. PROBLEM 1: The tab is not removed from the non-e10s window. The tab exists in both the e10s and non-e10s window. PROBLEM 2: The tab in the non-e10s window can't be closed using the ⌘W keyboard shortcut or by clicking the tab's X button. PROBLEM 3: The new tab in the e10s window has the correct favicon, but no content or URL. PROBLEM 4: Likewise, if you drag a tab from the e10s window to the non-e10s window, the new non-e10s tab doesn't have content, a URL, or a favicon. The e10 tab remains and can't be closed.