It can be a consequence of PowerShell/PowerShell#20930 (comment)
Here are the similar problem caused by this:
chocolatey/choco#3364
chocolatey/choco#3387
Scoop has a similar issue (Moeologist/scoop-completion#35), and a relevant fix (Moeologist/scoop-completion#25) is quite large.
Import-Module 'E:\<path>\vcpkg\scripts\posh-vcpkg'
It can be a consequence of PowerShell/PowerShell#20930 (comment)
Here are the similar problem caused by this:
chocolatey/choco#3364
chocolatey/choco#3387
Scoop has a similar issue (Moeologist/scoop-completion#35), and a relevant fix (Moeologist/scoop-completion#25) is quite large.