Same here...
Rupture Tendons disappeared from my skillbook and also from my bar, I had it twice since an item I have gives me this skill, maybe it's what caused this bug, at this time I still didn't try to learn it again, I can use it thanks to my item, but I really hope I'll be able to learn it again without the need to keep the Fancy Dagger that give the skill, since it's a skill I use in every fight...
Thanks for the great game anyway.
Edit : No mods installed also because I wanted to prevent any more bugs and I want achievements.
Last edited by Defender; 07/10/17 04:59 PM.