In Progress Formations get messed up when reinforcements arrive

[tchaik]

Summary: When reinforcements arrive during a large battle, formations are changed with no input from the player. For example, if I put my archers in loose formation in a long line, they will later bunch up into more of a square shape when reinforcements arrive. This SEVERELY disrupts the battle as your units start moving during the most important part of the battle!
How to Reproduce: Play any large battle with more than 1000 units
Have you used cheats and if so which:
Scene Name (if related):
Media (Screenshots & Video):
Computer Specs:
OS: windows 10
GPU: nvidia 1660
GPU Driver Version:
CPU: 9500k
RAM: 16gb
Motherboard:
Storage Device (HDD/SSD): ssd

 

[uçanbiblo]

Hello, we are aware of this problem and working on it. Thank you for your time.