Transcoding Prores 422 Mov to H264 Mp4 (match source high bitrate) simply does not work

And this has been bugging for years.

On Intel Macs and My M1 Max 16" Macbook pro.

AME 2021, 2022 both do not finish packaging the file resulting in a 51kb file.

Generally if I go back to 2020 it will work properly but now I can't download that version.