I'm not sure I understand.
You are saying the policy effects in your version are not working as the tooltip says they would.
But the tooltips in Polish are translations of the vanilla tooltips, they are not translations of the GEM tooltips.
So I don't understand why you should expect the policy effects to match your Polish tooltips. Those tooltips don't describe what GEM actually does.
I don't know whether the GEM policy effects are still going on underneath, or whether the translation itself also interferes with policies working.
But I don't think GEM is designed to be compatible with non-English language versions. This is the case for most mods.