Somewhere between v. 20 and 22 aerender has stopped reporting progress on renders, ignoring the -v "ERRORS_AND_PROGRESS" flag.
I've tried to debug the commmandLineRenderer.jsx file and can confirm that it seems to understand the argument and sets cur_item.logType = LogType.ERRORS_AND_PER_FRAME_INFO; correctly.
However both logging to console or file omits the usual pr. frame lines.
This is a critical feature for us in terms of reporting render progress to users.
I've tested using aerender version 22.3x107 on macOS 10.15.7 and 12.3.1.