Please find a new version of Opera 58 developer.
Warning on closing a browser window with multiple tabs open
To help prevent losing your data when filling out forms or writing comments by accidentally closing all tabs, we added a confirmation dialog to warn you about closing a browser window with multiple tabs. If you don’t want this window to appear, just mark the checkbox titled “Do not show this warning again”.
This dialog will not be shown for private windows.
Chromium was updated to version 71.0.3573.0.
- Browser is not re-launched automatically after Recover > Reset…
- You can’t copy using Cmd+C (macOS) if Search&Copy Popup is displayed
All changes are listed here.