Flickr: There is only one button [Update] in Grid pannel

Reproduction Steps:
1. launch qmlviewer then execute flickr.qml file
2. wait network to download pictures
3. select any picture to transfer to information pannel
4. click [View...] to view the full-size picture
5. click [ellipses] icon then enter any tag you want
6. click [OK] icon to search

Expected Result:
Return to original grid pannel, [Update] and [View Mode] button displays on the bottom of screen.

Actual Result:
Return to Original grid pannel, but only [Update] button is shown.