VS2017反复将GlobalSection附加到解决方案文件

Question

VS2017 v15.9.3，每次我打开解决方案文件时，它都表明解决方案文件已更改。查看更改时，我一次又一次看到相同的GUID。这是VS错误还是AnkhSVN错误？

Global
    GlobalSection(SubversionScc) = preSolution
        Svn-Managed = True
        Manager = AnkhSVN - Subversion Support for Visual Studio
    EndGlobalSection
    GlobalSection(SolutionProperties) = preSolution
        HideSolutionNode = FALSE
    EndGlobalSection
    GlobalSection(ExtensibilityGlobals) = postSolution
        SolutionGuid = {guid}
    EndGlobalSection
    GlobalSection(ExtensibilityGlobals) = postSolution
        SolutionGuid = {same guid gets repeated}
    EndGlobalSection
EndGlobal