MiKTeX 21.6.28 has been released on June 28, 2021.
Common TEXMF root directories in a private (current user) installation
In the past, common TEXMF root directories (e.g.,
were in the input search path, even if MiKTeX was installed for the current user only.
As of 21.6.28, common TEXMF root directories are excluded from the input search path.
This should have no impact for most users, because these directories usually do not exist when MiKTeX is installed for the current user.