[Concelhaut's Parasitic Staff Game Breaking Bug]

I'm having a weird bug where the summoned staff can't be unequipped. Also, the first weapon in the weapon set 1 can't be unequipped too nor I can change the weapon set. No matter what I tried, I can't solve this. This happens with my main character.

The bug is so annoying and really makes me quit the game. I can;'t even complete the quest "Dirty Laundry" the way I want due to the bug. I tried everything (restarting, resting, summoning other weapon etc) nothing helps. Can you solve this ASAP?

Here is the screenshot. Unfortunately, the save game is bigger than 507kb so I cant upload it.

 

["Rot Skull" summoned weapon permanently equipped. Can't remove or switch]

Same here with the main character and Concelhaut's staff. Can't unequip it. A game breaking bug. 

[Spiritual Weapons won't disappear]

Im having the same problem. I'm having a weird bug where the summoned staff can't be unequipped. Also, the first weapon in the weapon set 1 can't be unequipped too nor I can change the weapon set. Cant complete the quest "Dirty Laundry" cause of the issue.  Any fix for this issue?? 

[Bug - Concelhaut's Parasitic Staff]

Im having the same problem. I'm having a weird bug where the summoned staff can't be unequipped. Also, the first weapon in the weapon set 1 can't be unequipped too nor I can change the weapon set. Cant complete the quest "Dirty Laundry" cause of the issue.  Any fix for this issue??