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

[0101]

Issue 1

Repro steps

1. Have a file with a backing signature file that contains a function with parameters
2. In the implementation file rename a parameter

Expected behavior

Parameter is renamed in both implementation and signature files.

Actual behavior

Parameter is only renamed in implementation file, resulting in a warning that the names differ.

Known workarounds

Do the rename in signature file manually

Issue 2

Repro steps

Rename the parameter in signature file

Expected behavior

Parameter is renamed in both implementation and signature files.

Actual behavior

Known workarounds

Do the rename manually

Related information

Visual Studio 17.5.0 Preview 2.0 [33107.333.main]