in game overlay disabling works incorrectly

I always turn off the in-game overlay. due to the fact that when it is active in the game it is impossible to write in Cyrillic. But it turns back on by itself after 2-3 days. I don’t have the habit and I’m not going to develop it, to go into the settings and check that this function is turned off. My first question to the community is if there is a way to PERMANENTLY disable the overlay. Can I change the value somewhere in the .xml files or replace the .dll? [CM - removed]

[author restored]

There is no point in turning to the developers for help for several reasons: firstly, I realized that this is not a bug but a feature, and therefore they are not fixing it, and secondly, they recruited non-white staff, who are mostly programmers, for the sake of variety, to the detriment of the quality and skills of worthy workers.