Done Roots boss is buggued

When you kill the roots boss, he doesnt drops nothing (he should drop otherworld essence) he doesnt do his death animation neither when he turns black, only dies
The most curious thing its that the boss bar doesnt show the current boss life and its always full

 

It works well

 

Its from the roots mod, He spawns with a ritual
I recorded a video

 

didnt some drop fall to the void at the end of the fight?

 

that is a good point and i didnt see a magnet so what might have happened is that it fell into the void or glitched out the pick up zone so maybe spawn it/battle it in a closed area?

 

1 The boss cross every blocks
2 The item dropped by the boss is a shader that all the bosses drops
3 If you see well, i got that shader
Please i killed the boss 5 times, im sure he doesnt gives anything

 

Marking Done for inactivity.