History files and other state data should be stored in ~/.local/state/far2l, not ~/.config/far2l
According to the XDG base directory specification, state data such as action history is supposed to be stored in $XDG_STATE_HOME, which, by default, is equal to $HOME/.local/state:
$XDG_STATE_HOME defines the base directory relative to which user-specific state files should be stored. If $XDG_STATE_HOME is either not set or empty, a default equal to $HOME/.local/state should be used.
The $XDG_STATE_HOME contains state data that should persist between (application) restarts, but that is not important or portable enough to the user that it should be stored in $XDG_DATA_HOME. It may contain:
actions history (logs, history, recently used files, …)
current state of the application that can be reused on a restart (view, layout, open files, undo history, …)
This distinction is important if your configuration directory is stored on a cloud storage service or synchronised across devices through some other method, since history files are updated very frequently and you don't normally want them to be synchronised.
Edit: it's been pointed out to me in the Telegram chat that plugins/state.ini may need to be moved to the state directory as well.
Edit 2: it turns out that plugins/state.ini contains both plugin state data and plugin hot key settings; the former should be moved to the state directory, whereas the latter should stay in the config directory.