One of the two times The Steipler zt”l hit R’ Chaim Kanievsky shlit”a as a child was when there were no chairs available in shul, and he sat on the floor for Tachanun. He explained that the Halachah is that one must sit, and due to the lack of chairs, he had to sit on the floor. Supposedly, the Steipler hit him and told him to “be normal”.
