Document -WindowStyle Hidden behavior change on Windows 11 24H2+

[SufficientDaikon]

Summary

PowerShell/PowerShell#27111 fixes PowerShell/PowerShell#3028 by eliminating the console window flash when launching pwsh -WindowStyle Hidden on Windows 11 24H2+ (build 26100+).

The fix uses consoleAllocationPolicy=detached in the pwsh.exe manifest and AllocConsoleWithOptions to allocate the console programmatically — invisibly when -WindowStyle Hidden is specified.

Pages to update

• about_pwsh — The -WindowStyle parameter section should note that on Windows 11 24H2+, -WindowStyle Hidden prevents console window creation entirely (rather than creating then hiding).

Behavior change

Windows version	Old behavior	New behavior
Before build 26100	Console window flashes briefly, then hides	Unchanged
Build 26100+	Console window flashes briefly, then hides	No console window created

Related

• Fix PR: Fix -WindowStyle Hidden console window flash PowerShell/PowerShell#27111
• Issue: Powershell -WindowStyle Hidden still shows a window briefly PowerShell/PowerShell#3028 (open since January 2017, 160+ upvotes)