Are you sure that things changed with the OS release? Or is this an APFS versus HFS Plus difference?
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Quinn “The Eskimo!”
Apple Developer Relations, Developer Technical Support, Core OS/Hardware
let myEmail = "eskimo" + "1" + "@apple.com"
Thanks eskimo for quick response.
On macOS 10.15, I tested with a dmg file formatted using exfat. The result is same as that for APFS.