Derelict Mansion boss fight not starting, and siphoning strike issues

I faced this in the campaign and now in maps, the bosses are just stuck there doing nothing, also portals can be opened which means that the boss fight is basically not triggering?

here is a youtube video (sorry it is 4 minutes long and might have irrelevant stuff)
https://youtu.be/Bm5t6FctdCE

also i play a monk, i use gathering storm a lot to get shocked ground and use my siphoning strike to get charges, but siphoning strike is very weird at times, specially in the mansion, it travels towards the target but does not strike the enemies, it seems that terrain or the narrow passages mess up with the traveling and hitbox of the skill, also can be seen specially on some enemy types like flying enemies, the skill struggles hitting those