Hmm, looks like either #macOS #SystemSettings' Storage screen can't add or it can't find all applications...
It says there are 509.26 GB of applications, but when I added up the claimed sizes from the same screen, it was only 312.04 GB
Thus, (at least) one of two things is wrong — either the displayed total is nearly 200 GB too large, or there are applications not in the list or with the wrong size in the list.
Feedback ID: FB17135716