Pistol Whip doesn't work?
Second Update: Teleporting out of the mists and killing 1 mob allowed me to ‘relearn’ pistol whip. It was colored before and therefore learned … but I’ve just learned it again. So I guess it’s definitely a bug, but it already has a workaround.
I’m a bit doubtful that someone with this bug will be able to find this post sadly, but traveling to the mists and back is a simple solution.
Another thing on Pistol Whip: the tooltip states 9 hits but I see less than 9 (don’t remember ho many and I can’t try it now but they were about 5-6)