Non-standard companies - section in the main menu

I went into the game, a section appeared - “Non-standard companies”. Maybe there was an update, xs. I had company there for version 1.31 for classic. And then she appeared in the reformjet. Ok, I went into it, it works, I left. I went in the company of the original - she ended up there, and the companies disappeared, the saves were all broken and the sound began to disappear in the main menu. I decided to restart the game, in the main menu of the game everything became unstable. Alt + F4 helped. Went back, only first to the company of the original. Okay - I see them. Saves still don’t work. I went to a non-standard company, then again to the original company. They are gone, she is there again. Alt + F4 helped to get out. What the hell is this and how to solve it?
I don’t know how to add screenshots here.

I would add screenshots but I don’t know how

are you perhaps referring to “custom campaigns”?

Все верно. Просто у меня написано так как я написал. И описал ошибки