[2019] The "Skill disappearing" bug needs to be TOP PRIORITY for Massive to fix.

Running a turret+drone combo is the most miserable I've ever been playing this game. Skills not reliably proccing is unacceptable.

EDIT: One possible workaround according to u/xZerocidex is to disable "Cancel skill when aiming" in Settings>Controls, I'll update this post if it works for me.
EDIT 2: Issue still persists for me with the setting turned off.