Winget pin add (AppID) --blocking fails to prevent app upgrade when scripts runs as SYSTEM

Brief description of your issue

As the title says, a few of my apps I did NOT want to be upgraded still got upgraded by "winget upgrade --all" even tho I had run "winget pin add (AppID) --blocking", this command's success was confirmed by "winget pin list" command, they all got pinned by "blocking".

Steps to reproduce

Run winget pin add (AppID) --blocking
run a winget upgrade --all script as SYSTEM
look at the log file: it will say, for example, that PowerISO got upgraded even tho I made sure to block it by the aforementioned commands and the list showed the block

Expected behavior

Winget pin add (AppID) --blocking should completely prevent any version upgrades whatsoever.

Actual behavior

Winget pin add (AppID) --blocking does NOT prevent ALL app versions from being upgraded

Environment

Windows Package Manager v1.7.10861
Windows: Windows.Desktop v10.0.22631.3374
System Architecture: X64
Package: Microsoft.DesktopAppInstaller v1.22.10861.0

Start with the winget pin add (AppID) --blocking, winget pin list, and winget upgrade --all entry points, reproducing the upgrade script under SYSTEM on the reported Windows and WinGet versions. Compare the pin state with the upgrade log; done means a blocking pin prevents the pinned application from upgrading when the command runs as SYSTEM.