Midi cycle record - only 2 takes being recorded

Hi, when cycle recording a 2 bar midi loop with ‘new parts’ and ‘stacked’ set in the mid record options as I play it records the first and second passes as new lanes then appears to be recording the third but it’s empty and disappears when the two bars are up. It continues to loop with record lit but only the first 2 passes get recorded. Crazy. Be grsteful of your expertise. Cubase 10 pro.