Critical Damage of Ice Spear + Support is overlapping other stats

I have an Ice Spear skill rune, and two Increased Critical Damage support runes. When Ice Spear is equipped, the stats window of the character screen is correct (I think). But if I place one of the supports on a linked socket, the critical damage changes, the line doubles up and overlaps the critical chance line below it. Also, adding the third rune doesn't change the critical damage of just two runes (don't know if that's correct, though).


This is the screen with just the Ice Spear equipped:




This is the screen with Ice Spear and one ICD rune equipped:




This is the screen with Ice Spear and two ICD rune equipped:




Sorry if the images are too big, couldn't find another way. :P

Oh, and thanks so much for this game, it's just amazing!

If you have multiple of the same support gem linked to a gem, only the highest level support gem will give its effect.