water ball glitch?

I was lv 93 in hardcore, with 10k energy shield and 80 evasion. And max resists, even some armor. I've been doing t15s for a while, I never get below 8k energy shield. Suddenly I died in 1 hit with the water ball on me. It was a weak white mob.

I think this is a glitch and probably ripping other chars. I literally killed all the ubers but somehow died to this.

After doing research, this appears to be intentional. This is dumb because, no one wants to play hardcore, and every single map you have to worry about dodging a bubble no matter how tanky you are, this is anti fun. I hope to see this removed in future seasons or I may not play hardcore, and I've been a hardcore gamer for over 10 years often sitting in top 10s.