grid display doesn't update when threshold changed for library image

[touretzkyds]

Go to the image library and select the close-up image of Yann LeCun. Then click on the blue "-" button to reduce the threshold for the image detector. The grid display does not update, but it should. This is a bug.

Go back to the image library, select a different image, then go back to the Yann closeup image. Now the grid display shows multiple detectors active. Click on the red "+" button to raise the threshold, and again, the grid display does not change. This is the same bug.