iv noticed that i can hear the crafting sound of an item being finished even when im away from my base and when i have everything in my base crafting its a none stop sound. i can hear it even when my base isnt rendered in
For me, the sound stops when I leave the area but once I return, the crafting sounds for every item completed all play at once. It’s pretty annoying. Your issue is probably more irritating though.
I have the same bug on Single Player. All sounds at the same time. Before I figured it out what it is I always thought something just broke!
yeah, got the same thing with every sound played at once in sp myself. got kinda used to it, like "hey, boss we’re done 
quite satisfying to hear that cranking sound with a couple hundred things in the making
it seems to be indeed related to the single player mode, since it happened to me 1 000 times in SP and it never happened to me online for 2 days.
i’m glad i don’t hear that sound anymore because it was pretty annoying and even “scary” sometimes when everything was calm and quiet.