Same problem here: First pinned tab is always restored as unpinned.

Google Chrome v41.0.2272.101, Tabs Outliner v0.4.81.

Instructions to reproduce bug:

1. Open new window.
2. Open tabs and pin them: gmail.com, facebook.com, youtube.com.
3. Open google.com, leave it unpinned.
4. In TO, safely close the window.
5. Restore the window - gmail is restored as unpinned.

- Screenshot BEFORE windows is closed: http://i.imgur.com/WBoCBWz.png
- Screenshot AFTER window is restored by TO: http://i.imgur.com/LMxGtu2.png

Thank you.