Dalraida bug on the 3rd boss

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Date & Time: Around 12pm Server time
Frequency: Only once so far
World name: Odin
Character name: Meriko Rei
Monster name: Saunion & Dawon The Younger
Steps:
1. Start the new Dalraida Critical Engagement
2. Get to the SXaunion and Dawon the younger boss,
3. Kill one boss while the tether that reduces damage when close together is active and the buff that reduces damage remains up forever with no way to remove it