Renaming method parameters doesn't work properly with signature files in Visual Studio

[0101]

Please provide a succinct description of the issue.

Repro steps

1. Have a file with a backing signature file that contains a method with parameters
2. In either the implementation or signature file, rename the parameter

Expected behavior

The parameter is renamed everywhere.

Actual behavior

The parameter is only renamed in the current file.

Known workarounds

Rename it manually.

Related information

Followup for #14554