HoI 4 - Crashes when hoi4 with Koreans

[WACHAmaru]

Description of issue
Crashes when hoi4 with Koreans

Game Version
1.11.12

Enabled DLC


Do you have mods enabled?
Yes

Description
I am Japanese, but when I play multiplayer with Koreans, I get resyncs and crashes.
At first I was playing multiplayer with Koreans using the Korean Language mod and Japanese using the Japanese Language mod, but soon the resync occurred, so I made the Koreans pull out the Language mod to play.
But now it started crashing.
Why is this?
Is it not possible to play multiplayer across the ocean?

Steps to Reproduce
Multiplayer between people using the Japanese Language mod and people not using the mod.

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[Sunsteel]

Description of issue
Crashes when hoi4 with Koreans

Game Version
1.11.12

Enabled DLC


Do you have mods enabled?
Yes

Description
I am Japanese, but when I play multiplayer with Koreans, I get resyncs and crashes.
At first I was playing multiplayer with Koreans using the Korean Language mod and Japanese using the Japanese Language mod, but soon the resync occurred, so I made the Koreans pull out the Language mod to play.
But now it started crashing.
Why is this?
Is it not possible to play multiplayer across the ocean?

Steps to Reproduce
Multiplayer between people using the Japanese Language mod and people not using the mod.

Upload Attachment
File(s) attached

Can you give links to the language mods? Also, never play modded hoi4 with a different mod unless they are completely cosmetic, and pulling out a mod is even worse.
(Edit: this should be in tech support)