Steps to reproduce
Open PowerShell Core (as non-admin session) as per details in this PR #8109 with adding the -settingsfile ./test.json to the executable path (on Windows) so becomes "C:\Program Files\PowerShell\6-preview\pwsh.exe" -WorkingDirectory ~ -settingsfile "C:\Program Files\PowerShell\6-preview\test.json"
Expected behavior
Loads with no error (tab completion of d-na expands to Disable-NetAdapter)
Actual behavior
Loads but complains with
Cannot load PSReadline module. Console is running without PSReadline.
Tab Completion of d-na does complete to Disable-NetAdapter
PSReadLine cannot be added to session and execution Policy is set to restricted and I have to set the scope to Bypass to load PSReadline after which I can use d-na tab completion and PSReadline

Environment data
Name Value
---- -----
PSVersion 6.2.0-preview.4
PSEdition Core
GitCommitId 6.2.0-preview.4
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