Wall not working with adds with viper napuatzi

Doing the boss fight with Viper Napuatzi.

The frost wall is block her attacks (or break with some of her attacks).

However when she goes to the phase where her guards are throwing spears, the walls do nothing and spears just pass through them (without breaking).

Please fix.

Not all attacks that look like projectiles are actually projectiles. Frost wall has issues with some types of mobs running through it like it isn't there, but the skill you mention is likely just beam aoe.