Bug in Update-MgUser: Lowercase "rn" in String Causes Truncated Output in Entra

[benpaddick1]

Describe the bug

When using the Update-MgUser cmdlet from the latest module update, there appears to be an issue where any user field containing the lowercase string "rn" is truncated at that point when updated in Entra. If the same string is provided in uppercase ("RN"), the issue does not occur.

Expected behavior

Expected Behaviour:

The FaxNumber field should display the complete string:

"Test string with rn in it"

Actual Behaviour:

The FaxNumber field shows the truncated string:

"Test string with in it"

How to reproduce

Steps to Reproduce:

Update-MgUser -UserId $User.Id -FaxNumber "Test string with rn in it"

Check the updated FaxNumber field in Entra.

SDK Version

No response

Latest version known to work for scenario above?

No response

Known Workarounds

Workaround:

Changing "rn" to uppercase ("RN") prevents the truncation:

Update-MgUser -UserId $User.Id -FaxNumber "Test string with RN in it"

Impact

This issue could affect user updates where "rn" appears naturally in strings, potentially leading to data loss or corruption in user attributes.

Can anyone else reproduce the error.

Debug output

Click to expand log

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### Configuration

Windows 10 Build 19405
Module: 2.26.0

### Other information

_No response_

[timayabi2020]

Hi @benpaddick1 apologies for this experience. Please update to version 2.26.1. I'll also close this as a duplicate of a similar issue that had been reported here #3178