The "cannot build" entity sound, in utility sounds, does not play when it should in version 0.18.31. I discovered the issue when attempting to mod it, and was able to get confirmation from others that it was indeed broken.
How to reproduce: attempt to build an entity in an invalid position, such as overlapping another existing entity, in version 0.18.31.
[0.18.31] Missing "cannot build" entity sound
Re: [0.18.31] Missing "cannot build" entity sound
Thanks for the report. As far as I can tell that's intended. Even as far back as 0.13 it was removed. The red outline, highlight, and floating text replaces it in that instance.
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