Hmmm I think it may be like he is torn between wanting to please mummy and wanting to do his own thing IYKWIM.
Last night after his bath he was doing the nuddy run and he started to wee on the floor so I scooped him up and ran to the toilet. He was screaming "no sit on toilet" but as soon as he was on it he weed and started clapping himself. Mason came in and clapped too so that was a bit of a breakthrough.