How do I get the editor tabs to display the file location from which the file in the editor window was loaded? Version 8.6.1 had this feature; right-click the editor tab, then move the cursor over the word 'Tabs', then ALL tabs are displayed with complete path, with a check mark by the active tab.
WORKAROUND #1:
Right click in the editor and select properties. The window that opens up will show you the path for the file opened in the editor's tab.
WORKAROUND #2:
In the Editor toolbar, next to the Open File button, there is a little dropdown arrow. If you click on this error, it will show you the last 10 files (including the path) that were opened.
STATUS:
Waiting for fix to be released in a future version of Toad for Oracle.