Deszus

Karazhan chess event loot is broken like hell now.
If you win the event (defeat boss) get this “message”

https
://drive.google.com/file/d/1zgsIoQWdUadp1Y3iy8YzpEDMvlByvLtw/view?usp=sharing

Like i joined the raid after boss kill. Can’t use the chest (no cogwheel) and can’t restart the event also. Still can progress to the last boss but that’s all. Tried with multiple chars with the same result. Tried without any addon with the same result.
Just farming transmogs but without loot this is a LITTLE bit frustrating.
Anyone know a solution or workaround?

PS: My first post here. What is this “no link allowed” thing???