[LAD] zita-a2j and zita-j2a zombie processes

I am using ubuntustudio-controls (and thus autojack) to manage multi- USB audio interface scenarios as I continue to test my radio automation software port/upgrade. I am seeing a weird problem over weeks of operation where every few days a bunch of new zombie processes show up. The original zita-j2a and a2j processes that autojack started are still running, so this is not autojack restarting something. The zombies are all a child of autojack. So best I can figure, autojack is not detaching it's processes, or checking for process cleanup (some python equivalent to fork/exec and wait/ join). But why are these being spawned in the first place? Or maybe I am misdiagnosing, and this isn't autojack related? I wouldn't care, except after about a month, the process list gets full enough that Ubuntu (20.04) can't run any new processes. This is critical to my automation system, which creates and destroys player processes as new audio items are loaded, played, and completed. Any insight would be appreciated. Thanks, Ethan Funk https://github.com/eafunk/audiorack