Hello there, Thank you for reaching out to us and for the linked video. We understand you experienced an issue with what sounds like Arc Soul and threadlings not being generated when expected. We're sorry to hear of this, as we can imagine the impact of such an incident. So we can effectively investigate what may have caused this, please let us know whether you have experienced this more than once and if it's always under the same circumstances. In addition to the above, please let us know which exotics and aspects you were using at the time of this incident, and whether this happens on difficulties lower than Grandmaster. We'll then investigate. Thanks.