Whirlwind lance wierd interactions with Twister

This bug is observed during interaction between Twister and Whirlwinds created by Whirlwind lance.


I am using Whirlwind Lance with multiple projectiles.
When lance is used without Frenzy charge it produces multiple Whirlwinds.
Then I can use 1 projectile twister to collapse those whirlwinds.
1 twister than can collapse multiple whirlwinds, producing more twisters every time.
But when lance is used with Frenzy charge each, even though multiple whirlwinds are created, single twister projectile can only colapse one of them.

Any updates on this ?