Zalmarath, the Colossus

In multiple play through in both the previous season and the current league, this boss seems to have a problem with its hit box either not aligning with its model or the hit box just disappearing with no clear indicator as to when or why this happens. It feels as though it's some kind of desync problem.

I just encountered a scenario where 80% of the way into the fight the boss became completely intangible except for when it was walking side to side. Every time I've run into this situation it seems to happen at a random point in the fight sometimes from the very beginning to when the boss reaches 10% hp.

This boss has resulted in multiple frustrating deaths while mapping in the previous season to the point I began avoiding the map any time it had a boss on it.

Wrinting under a random post to avoid duplication, but here it is:

Colossus is an AWFUL boss. No other boss in game has a so much targeting problems agains them. And i've got i think at least 10 characters through it: ones has it easier than others, but there was NO fights without targeting problems. It's cool boss as an idea, but it's terribly implemented. Each time i'm passing through it i swearing about it. Even poe1 kitava doesn't have such problems. Please just fix.

So far as i can see, the root of the problem is that the root of the colossus is the somewhere 100 units below the arena, so any namelocking skills shoots the ground, especially was notable on bonestorm (that was long ago, so probably fixed now, idk). In current patch (0.4.0c) Lightning rods can't explode... since it's too far from boss to rods to chain there or there just no line of sight, idk. So i'm out of 60%+ of my dps due to this. And problably many more skills have similar problems