macos 18.6 file extension issue

File extensions continue to reappear and cannot be permanently hidden. This has been an issue since at least 18.2 and maybe farther back.

iMac (M3, 2023)

Posted on Aug 15, 2025 12:40 PM

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2 replies

Aug 15, 2025 12:48 PM in response to Bud in PA

Bud in PA wrote:

macos 18.6 file extension issue

File extensions continue to reappear and cannot be permanently hidden. This has been an issue since at least 18.2 and maybe farther back.


are you commenting about macOS 15.6....(?)


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The current stable release of Sequoia including bug fixes, security updates is macOS 15.6

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The current stable release of iOS including bug fixes, security updates is iOS 18.6.1

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macos 18.6 file extension issue

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