Import-PfxCertificate is not compatible with Temp:\ drive

[gmemstr]

(reported here as well: PowerShell/PowerShell#15516)

Steps to reproduce

[System.Convert]::FromBase64String($certificate) | Set-Content Temp:\cert.pfx -AsByteStream
Import-PfxCertificate -FilePath Temp:\cert.pfx -Password (ConvertTo-SecureString -String "$cert_pass" -AsPlainText -Force) -CertStoreLocation Cert:\CurrentUser\My

>>> Import-PfxCertificate: C:\Users\circleci\AppData\Local\Temp\remoteIpMoProxy_PKI_1.0.0.0_localhost_9ffcc35e-4d9c-45e6-9cac-a8a2924980b3\remoteIpMoProxy_PKI_1.0.0.0_localhost_9ffcc35e-4d9c-45e6-9cac-a8a2924980b3.psm1:1279
Line |
1279 |          $steppablePipeline.End()
     |          ~~~~~~~~~~~~~~~~~~~~~~~~
     | Cannot find drive. A drive with the name 'Temp' does not exist.

Expected behavior

Certificate is imported correctly.

Actual behavior

Unable to "find temp drive", despite content being written out to the specified file correctly.

Environment data

$PSVersionTable

Name                           Value
----                           -----
PSVersion                      7.1.3
PSEdition                      Core
GitCommitId                    7.1.3
OS                             Microsoft Windows 10.0.17763
Platform                       Win32NT
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0.}
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1
WSManStackVersion              3.0