Yes, it is very strange and I can not understand why it is happening. I checked that on 2 different computers but here it is:
[root@keystone libavcodec]# diff pcm-bluenc.c /root/Downloads/pcm-bluenc.c
[root@keystone libavcodec]#
[root@keystone libavformat]# diff mpegtsenc.c /tmp/cinelerra-5.1/thirdparty/ffmpeg-4.4/libavformat/mpegtsenc.c
1959,1962d1958
< } else if (st->codecpar->codec_id == AV_CODEC_ID_PCM_BLURAY && ts->m2ts_mode) {
< mpegts_write_pes(s, st, buf, size, pts, dts,
< pkt->flags & AV_PKT_FLAG_KEY, stream_id);
< return 0;