[Bug 33494] gthumb doesn't re-scan thumbnails when permissions change

[Geoff Jacobsen]

Public bug report changed:
https://launchpad.net/malone/bugs/33494

Comment:
Tried 2.7.5.1 but no difference:

1. copied abc.jpg to xyz.jpg, change owner and permissions on xyz.jpg to
root 600.

2. opened gthumb no thumbnail for xyz.jpg as expected.

3. chown and chmod back to me for xyz.jpg but still no thumbnail.

4. Tried <Ctrl>-R, still no thumbnail.

5. "touch"ed file, now thumbnail appears.