1. Connect remotely via "remote tab" to a SSH server
2. Open and modify a php file but do not save yet.
3. Right click on the editor tab and chose "New editor".
4. Now you have two tabs with the same file opened, right? Modify file again and save.
5. You'll get an error message saying "Error saving the remote file yourilename.php"
6. Refresh the folder where file is stored. The file is gone!