Rebinded keys are not saved

Hello.
I’m on 1.2.0. I’m using RebindUIPrefab from examples. It works great in Editor and PC build.
BUT. Rebinding on some_portable_console is working as expected, but they are not saved when I close the game.

Maybe I can somehow save and load all bindings manually using JSON or something?
Thanks in advance.

https://docs.unity3d.com/Packages/com.unity.inputsystem@1.3/manual/ActionBindings.html#saving-and-loading-rebinds