Kindred's Winrate after her E's bug fix...
http://i.imgur.com/8Eg1HAP.png
Yeeeaaaaaah... can we have it back please?
You said the bug fix would have a negligible impact on her performance. You can feel it immediately after the patch. And these are the results. Still falling.
So... either you knew she was lower than 50% or the testing wasn't enough to fully confirm how important it was for her.