Ferocius roar + Ancestral Cry (Skill Gem Upgrade) Crash (CTD)

When trying to upgrade a skill gem hovering over Ancestral Cry, causes my game to immediately crash to desktop without any error message. 100% repeatable. This only occurs when attempting to level up the gem, it works fine when creating it as new. I am playing druid and the skill gem is socketed in ferocious roar, i have tested it with other war cry skills socketed this way and it works fine. Appears to be specifically an issue with Ancestral Call.