To whom it may concern,
In Vanilla WoW and in the Classic Era 1.13 client, whenever a wing was completed, the corresponding eye by the entrance portal would glow and emit an ambient soundtrack. Since the 1.14 update to the Classic Era client, the eyes no longer emit the ambient sound. To hear what I am referring to, please listen to the video below.
If possible, please fix this audio bug in the 1.14 Classic Era client.
Thank you,
Rowaine
*2.15.2022 addendum
This bug has since been fixed for a while. I have not been able to personally confirm it until recently when I was in Naxx myself.