Bug - My move was ignored by system

I was playing game(rather poorly) but at the end my move Kb7 was just ignored and I was trying to do it about 1 minute.

Link to the game: en.lichess.org/CTAaRyspog8M
I don't knot if You have any logs cause bug i probably client side, but if You have please check it.

Currently lag compensation only applies when on the server your clock is above zero. (I agree, this seems like a bug.)