Fire Extension Lv 5 bug?

[kitty14]

hello! just want to ask if this is bug?

FE can do 1 damage its like 1 out of 10 FE ..

 

and i don't know if it is right FE = Acid Demonstration..

If its not bug, please explain why FE does 1 damage only? Im confused. please help.. 

thank you!

 

check image if you see same equip and stats but damage changes to 1:

Edited September 14, 2014 by kitty14

[kitty14]

solved