Please, make cachy-browser respect user language settings

Cachy-browser should respect user settings and do not reset them after restart. I have a problem to make playable Openguessr game for my children which need native language in game.
English may be default, but if user pic another language that should be respected by the browser.
I think that main problem is with: pref(“intl.accept_languages”, “en-US, en”);

Similar problem is described here but problem still persist:

And here:

This topic was recalled many times, I think it is annoyance for many people but no actions were taken.

Could You correct default settings for that?

Anyone? No response?

I’m unable to reproduce this. Any 2nd language that I install and select and have moved on the top of the list persists through restarts until i actively select English or any other language again.

I have also removed the delete site data and cookies + history on restart and have removed syncing in case the browser syncs the settings from some other place I’m unaware of.

Could you give me some specific steps to take, to try to replicate this?