I am not sure if it's from Xcode or macOS 27, but here is what I get after running df:
/dev/disk3s3 228Gi 1.5Gi 15Gi 9% 112 161M 0% /Volumes/Recovery
devices -- file:///Users/USER/Library/Containers/com.apple.CoreDevice.CoreDeviceService/Data/ 1.0Ti 0Bi 1.0Ti 0% 0 9.2E 0% /Users/USER/Library/Developer/CoreDevice/DeviceFS
It's really annoying. Is there any way to remove this?