Soraka Ult cd not correctly being applied.

After using Soraka's ultimate, the actual cool down displayed was much longer than the cool down shown on the ability description.

Some more details: -Only happened once that I noticed. The next time I used the ultimate it used the correct cool down. -Was not because of purchasing items or getting ultimate hunter stacks after the ability was put on cool down (the picture is taken immediately after using the ultimate) -Had ultimate hunter rune -Couldn't recreate the bug, but have a replay saved of it