I tried disabling all the options as shown in your attached image. Still no luck though.
I'm using LiveReload and some times when undoing in PhpStorm LiveReload refreshes my browser. Could it be that PhpStorm tempoarily creates some files that it reacts on?
I disable all checkboxes in Settings | General | Synchronization and cannot reproduce the issue.

File remains unsaved after I press Ctrl+Z (undo).
Hi and thanx for the reply.
I tried disabling all the options as shown in your attached image. Still no luck though.
I'm using LiveReload and some times when undoing in PhpStorm LiveReload refreshes my browser. Could it be that PhpStorm tempoarily creates some files that it reacts on?
Pierre, would you please vote for the issue http://youtrack.jetbrains.com/issue/WEB-7404