Since the base icons have been updated in 2.4 Afterburner overwrites half of them with icons that look like old style. As a result it looks basically worse than it was.

Also since some icons in base were renamed but the same icons in Afterburner were not, they were not picked up from Afterburner theme any more.

In MDL-40369 those icons were properly renamed but this issue was integrated in 2.6 (master) only.

As a result, the look of afterburner has changed in 2.4 and now is changing again in 2.6