Aloha Quinn, Yes, I am the developer of LuLu A user on X noted that maybe this issue is related to FB9334651 ...though I have no insight into that per se.

Thank you for your response, ah and good idea! I update the code with CFRunLoopRunInMode(kCFRunLoopDefaultMode, 10.0, false); but unfortunately still seeing the same behavior. (Also though I didn't mention this, originally this issue cropped in an application (w/ a run loop). I created a simplified command line program to isolate the issue).

Understood. What would be "official" way then to programmatically detect if a notarization ticket has been revoked? ...as, of course, building products that rely solely on supported approaches to implement requested capabilities by/for users, would be ideal! ☺️