Before:
After:
Detailed test procedure:
- Open the Information Panel
- Turn on previews
- Put some pictures in ~/Pictures
- Hover over it and see that the Information Panel shows a preview of its contents
- Add ~/Pictures to the Places panel
- Hover over it again and see that previews are no longer displayed
- Apply the patch and restart Dolphin
- Hover over it once more and see that there are now previews, yay!