Yes, this is a bug that started in 11.7 that doesn’t appear to have been fixed 
yet in 11.7.2.

Have you tried the arguably more robust and less error prone runtime checks of:

Swift
if #available(macOS 10.16, *) {
      // macOS 10.16 or later code path
} else {
      // code for earlier than 10.16
}

Objective-C
if (@available(macOS 10.16, *)) {
      // macOS 10.16 or later code path
} else {
      // code for earlier than 10.16
}

—Rob


> On Jan 6, 2023, at 1:32 PM, Sean McBride via Cocoa-dev 
> <cocoa-dev@lists.apple.com> wrote:
> 
> Hi all,
> 
> On at least 3 Macs in my office, running macOS 11.7 or 11.7.2, 
> NSAppKitVersionNumber (at runtime) is 2202.7 (sic).  This conflicts with 
> NSApplication.h which has:
> 
> static const NSAppKitVersion NSAppKitVersionNumber11_0 = 2022;
> static const NSAppKitVersion NSAppKitVersionNumber11_1 = 2022.2;
> static const NSAppKitVersion NSAppKitVersionNumber11_2 = 2022.3;
> static const NSAppKitVersion NSAppKitVersionNumber11_3 = 2022.4;
> static const NSAppKitVersion NSAppKitVersionNumber11_4 = 2022.5;
> static const NSAppKitVersion NSAppKitVersionNumber11_5 = 2022.6;
> 
> I had a macOS 11.2 installer lying around, and installed it in a VM, and 
> there NSAppKitVersionNumber is 2022.3 as expected.
> 
> I can't help but note that 2202 looks like a typo vs 2022!
> 
> As 2202.7 is larger than NSAppKitVersionNumber12_0 (2113) it results in going 
> into branches that should be Monterey-only.  Ouch.
> 
> Has anyone else observed this?
> 
> Thanks,
> 
> Sean
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