If I turn off all screen info with Shift + F and turn the suspension view with Shift + L on, everything is ok. But if I turn the suspension view off again with the same shortcut Shift + L, LFS show the screen info again (without pressing Shift + F). Looks like LFS "forget" the "state" of showing screen infos.

This behaviour I think is a bug.

Perhaps this can be fixed/integrated in the next test patch (0.6Q7 or so).

I think that's a feature that every time you're in a Shift + F mode OFF and try to display something like suspension view, tyres, damage etc., it automatically switches Shift + F mode to OFF.

yes