hi saupan, i try everything you said and double check it. and its working fine. both plugin template override, normal wordpress themes override, everything working fine both with login & not login state.
i don’t know what problem you having with your installation. try to disable all plugin that not related to the themes and see if the problem is still right there.
also can you give me screenshot folder and file where you override the file. im afraid we talking different kind of think here.