BuildLogDirectoryPath fails if using PathDirectory on solution in same folder

[Tdue21]

If I have my build script in the same folder as the solution and call Invoke-MSBuild with

-BuildLogDirectoryPath "PathDirectory"

an error occurs here (line 295):
if ($BuildLogDirectoryPath.Equals("PathDirectory", [System.StringComparison]::InvariantCultureIgnoreCase)) { $BuildLogDirectoryPath = [System.IO.Path]::GetDirectoryName($Path) }

As $Path do not contain a directory.