Kulemak boss fight bug

I killed the boss twice, then selected to fight him again.
After killing him, the **syphoning crystal beams didn’t disappear**, and they kept auto-locking onto me until I died.

Every time I challenged him again, even if I killed the boss in 2–5 seconds, the beams **immediately re-triggered** and stayed active after his death.

Once the boss dies:

* The **only interaction option** I get is **“Take the Ring.”**
* The other interaction option **is missing**.

I eventually gave up and took the ring, but the **loot spawned very slowly**.
While waiting for it to appear, the beams killed me.
When I respawned, **both the boss and the loot were gone**, but the game still showed *“Boss fight in progress.”*

this youtube video demonstrates my issue: "https://www.youtube.com/watch?v=xDVMFlU5bQs"

had this exact issue 3 times, towers kill me and my friends after killing boss 2nd time around, i'm a pure e-s build that can't get life from HP pots so it REALLY sucks, i avoid the invitation dungeon now as it has happened 4 times, twice solo and twice while in party, all times under different circumstances; clicked left to right order, click only kurgal, friend clicked... it suuuuucks! makes me hate this "pinnacle" boss... btw, actual fight was no issue, killed him pretty quick, just these F'"§&"§/ towers!!!