I run ZM systems on Puppy Linux Tahr, Xenial and Bionic 32 and 64 bit OS's.
with these versions you are experiencing this problem with had some teething issues and were not considered stable releases at all. These were development snapshots. My advice is to jump right in to version 1.33.0 and see if these "bugs" disappear.
Some times it's better to leave the empty threats at home and worry if it's you who did not choose a stable version and not a DEVELOPMENT one to recommend to a paying client and maybe do some research as the installer and professional to see if these issues have been documented and discussed if one insists on using one of the 1.31+ series.I'll probably not be recommending this to 6 of my clients who are looking for a Linux based system.
If you had read a little deeper into it you would have gotten the message that there is a transition to the h264 pass-through and direct to mp4 capability. In this series this system was introduced and refined. The BUG was most likely closed not out rudeness but because of depreciation of the bug meaning that in later versions it was fixed. To make it clear the Stable Release is still 1.30.4 and anything after that is still cutting edge and approaching the stable release status.