Swarm Final Mission Not Registering as Completed

I have just completed the Heart of the Swarm campaign, but the game is not registering that I have completed the last mission ‘The Reckoning’. After I go through the final cinematic and credits I am returned to the campaign menu screen and it does not say completed, just that my last mission was ‘Death From Above’. I have finished the last mission multiple times now but in my archive it still says 26/27 missions are completed and ‘The Reckoning’ or final cinematic do not show in the list of missions at all…