Prerequisites

• Write a descriptive title.
• Make sure you are able to repro it on the latest released version
• Search the existing issues.
• Refer to the FAQ.
• Refer to Differences between Windows PowerShell 5.1 and PowerShell.

Steps to reproduce

• create/find one 'base64.exe' or 'base64.ps1' executable file, put it in you $env:Path
• start pwsh with cmd: pwsh -noprofile. (start with your profile also fine here)
• cd to any dir but that bin path where you put it, input "base" then press tab, u get no completion, input 'b' 'ba' 'bas' 'base6' 'base64' tab completion works as expected.

Expected behavior

input 'base' then press tab, completion works for 'base64.exe'/'base64.ps1'

Actual behavior

not work on 7.6 and history releases.

Error details

Environment data

PSVersion                      7.6.0
PSEdition                      Core
GitCommitId                    7.6.0
OS                             Microsoft Windows 10.0.26200
Platform                       Win32NT
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion      2.4
SerializationVersion           1.1.0.1
WSManStackVersion              3.0

Visuals

No response