Bag with troop strength (Crusader Kings 3)

In general, when I collect troops somewhere their number immediately falls by half. That is, I had a limit of 5400, and falls to 2700. And this is nonsense, for I have a huge kingdom of White Russia with a part of Ruthenia. Hs, which could be a bug. I play for the heir, the first king died. Also Yusyu cheats Debug mod and tables Cheat Engine. Any idea what to do?