Steps to reproduce:

      1.Take a screenshot using F2 or camera button in the game menu.
      2.Go to Profile > Screenshot gallery
      3.Click on the screenshot.
      4.Click on "Manage" then press "delete screenshot".

Observed results:
If you go back to your gallery, the screenshot will still be there.

Expected results:
The screenshot should be deleted.

Tip:
You can only delete all screenshots in the storage settings or the screenshot file.