Blight monster stuck in Ore deposit

Hello, I have run several maps with Blight and Kalguuran events. However, on several mapsd, the Blight monster portal has become stuck in the ore deposits (see picture) and impossible to kill him for finish the event.

I believe this bug has already been reported, but it is always good to provide a gentle reminder.

If there is a solution to kill the monsters blocked by ore deposit, I'm interested :).

Thank you for fixing this in the future.

Another boss stuck by ore deposit. Impossible to kill him. Rip blight :(