"System" storage is fluctuating in size, and slowly growing
So I finally caved the other day, and updated to Mojave. Immediately after setting up, I encountered an issue.
My available storage had dropped from an already low 18-ish gigs (I was planning on doing the monthly file-purge after I updated) to about 200 megabytes. I was a bit alarmed, so I deleted some old files, and checked back to my storage in "About this mac" to see how much space I had freed up. It was then I noticed that "System" was taking up over 70 Gigabytes.
I went to the forums and found this post that cited a similar problem, which involved iTunes lumping in downloaded songs with the "System" category. So I went through and removed roughly half of my downloaded library, which didn't free up any space according to the storage page.
The next day I checked back, and "System" was now showing as 145 gigs, appearing to be representing both "iCloud Drive" and itself combined. As of now, They have separated back, putting it at around 85 gigs,
I have no way of reducing this, and even when I am doing seemingly nothing that would create new files "System" still slowly increases in size. Since this problem's inception I have downloaded no new files, and (to my knowledge) created no new files either, but have had to delete around 35-40 gigabytes of files just to free up 28.
iMac, macOS Mojave (10.14)
