This is automatic translation (from Korean) of 5.7.2021 update notice for Korean server (we will probably get same at our next maintenance):
 

The following is Korean server update for July 6 (Tuesday).
 

1) Fixed skill cooldown reset phenomenon

- The phenomenon that the cooldown is reset when logging in again after using some skills has been fixed.

 

2) Fixed warehouse item error

- An error where some items could not be deposited in the warehouse has been fixed.

 

3) Adjusted the number of people participating in Hundreds of thousands of soldiers

- Hundreds of thousands of soldiers have been adjusted from 100 to 150.

 

4) Infinite Tower monster experience increased

- Infinite Tower 5~8th floor monster's experience value has been increased.

 

5) Corrected engraving of mixed dye bag item amulet

- The amulet engraving on the mixed dye bag has been modified so that it is not possible to proceed.

 

6) Fix character selection screen blanking error

- An error that caused the character selection screen to become blank when reconnecting after the server disconnection message has been fixed.

 

7) Fixed an error in the range of the shaman's curse skill

- An error where only the cooldown was applied when the monster was farther than the curse skill range has been fixed.

 

8) Swordsman's Suction Sword, Checking Skill Error Corrected

- An error where the checkup skill was not activated intermittently has been fixed.

- An error where the sword skill effect was applied to the caster, not the monster, has been fixed.

 

9) Taegeuk decoration, Brilliant Stone Shard shop update

- https://www.gameagit.com/kalonline/2107costume