BUG - Select/Deselect All Check Box Does Nothing

[astrohart]

Figure 1. The Select/Deselect All check box in the Import Extensions dialog box.

The check box indicated does not work. If you click to place a check mark in it, and then click it again to remove the check mark, the expected behavior is that all the extensions in the list should be deselected. However, when I click it, nothing happens at all.

Perhaps an event handler became unhooked or something.