This is automatic translation (from Korean) of 23.8.2021 update notice for Korean server (we will probably get same at our next maintenance):
 

The following is Korean server update for August 24 (Tue).
 

1) Fix pet error

- An error where the positions of the limited pet and the water spirit hatch pet overlapped has been fixed.

 

2) Fixed movement speed constant error

- An error where intermittently unable to wear movement speed essence and monster pets has been fixed.

 

3) Fix the thousand-year-old Imoogi boss

- The spirit of the dragon will be summoned even if the thousand-year-old Imoogi boss's HP becomes 0.

 

4) Improved artisan soul recovery system

- Infinite Necklace and Ring of the Dead have been added to the craftsman's soul recovery criteria.

 

5) Fix the expiration of the event item period

- Event items have been modified to be deleted immediately when the period expires.

 

6) Fixed an error in the general defense buff skill

- An error where the general defense buff skill did not disappear intermittently has been fixed.

 

7) Aug. Amcheonjigwe Store Update

https://www.gameagit.com/kalonline/2108skybox