Did the behavior of HTML tab's "Shade Box Model" change or break lately?
When enabled, hovering over an element in the HTML node tree would put a blue highlight over the region the element covers. Now, it does nothing.
When disabled, it gives a blue border around the region the element covers.
My setup:
Windows 7 SP 1
FireFox 27.0.1
FireBug 1.12.6
Thanks,
-Rick