While we're speaking about Riven bugs, apparently the EQ glitch causing the Q to do absolutely nothing went live without being fixed, despite it being reported by several players.
While this bug was on the PBE it had a 100% replication ratio, however on live servers it only seems to happen every once in a while, haven't been able to replicate it myself so far but I've heard some have been able to replicate it.
(Please don't disable her unless you can fix it really fast, I really don't want her disabled during the URF weekend and it's not the most gamebreaking thing ever).
Edit: Oh and by the way, I forgot to mention that if you Q Flash as Riven, the Q does nothing at all except for playing it's animation, is this an intended feature or is it another bug?
Edit2: More bugs! Yasuo has the ability to talk while he's dead, Riven can trigger his quotes by Q'ing or Windslashing close to his dead body, kinda funny bug tho.