Hi! Ever since last patch, Quinn has been encountering failed launches whenever she tries to proc a mark. I'm unaware as to what triggers the bug since it doesn't happen 100% of the time, but it happens regularly. wish I could tell you reproduction steps other than try to proc a mark on a Vulnerable target. To my knowledge, it doesn't matter if the mark comes from natural Harriers, Blinding Assault or Vault marks; sometimes you'll just need multiple tries to proc it, resulting in enemies running away or missing out on key damage. Could you please have a look at this? I've provided a video in the description, courtesy of a frequent poster over at /r/QuinnMains.