Problems with MCDU2

[lwc.711022 3]

Hi. I found some problems with my Airbus's MCDU2.

First, when I initiate a Go Around, I always stuck at the 'GO AROUND ACTIVE' message showing at top and it never goes to next step 'CLIMB OR CONTINUE FOR NEW APPROACH'. Second, sometimes I cannot initiate approach checklist with both the hotkey and the key input of the MCDU2. When I need to do this, I have to deactivate the Co-pilot and re-activate it to make the approach checklist can start normally. Third, I found that sometime the Co-pilot will call out endless 'set baro reference captain' after touchdown.

Do there any solutions for these issues?