Are you sure it worked before because none of the changes made should be causing that.
Both DTS-X and Atmos worked before. They work when I switch back to 1.1.1.
I guess something related to audio has been changed, probably upstream Kodi. I hadn't checked DTS-X or Atmos, but on my TV (which directly to a Beelink M18, i.e. no AV receiver), was muted after upgraded to 1.1.2 while playback of AAC. However, GUI click is still there. To resume audio output, I must either 'Enable passthrough' or change audio output to 'HDMI analog'.
This started with af1's development build before 1.1.2, so I think it is an upstream problem instead your build specifically.