@Riot, please be thorough when looking to fix Riven's bugs. No need to rush!
As much as I enjoy getting 100-0 under my tower before the stun even ended, I really hope you guys take your sweet time fixing this bug. Feel free to test any kind of solutions over and over if needed. Also don't be afraid to do an extensive search for any more problems Riven may have and maybe even run her through with the balance team just to be sure all her problems are solved. Thanks!