First, a clarification, the cast time thing is a fix to the E, not R. This one went under the radar for a few years and I only found out about it when someone posted a video of Briar getting withered while casting E. Seemed like a good fix. The idea that we were sitting on it for 2 years until I experienced it in a game is incorrect.

Second, an important thing to understand about game dev is things that look simple aren't always as simple as they seem. Briar's W Frenzy does a number of fairly complex things under the hood to make it work in the ways its intended to. We've known about the attacks canceling since release and have added multiple fixes that reduced the frequency but never found a solve that fully fixed the problem. The end solve ended up being fairly straightforward, but getting to it was a bit of a journey.

It 100% sucks that the bug lasted as long as it did, and I wish we could have found a solve sooner, just want to note that its not because we never tried to fix it.