Solution dependency leads to error MSB4057: The target "GetTargetPath" does not exist in the project

There is a problem with solution dependencies that I believe was introduced with MSBuild 15.9, and is also a problem with 16.0.

The following scenario causes the problem;

• There is a project that has <GeneratePackageOnBuild>true</GeneratePackageOnBuild> set
• It has a solution dependency on a second project, and that project is multi-targeted.

Steps to reproduce

Build the attached project with MSBuild.exe or dotnet build: GetTargetPathRepro.zip

Expected behavior

The solution should compile without errors.

Actual behavior

The following error occurs:

"C:\Users\Brandon\source\repos\GetTargetPathRepro\GetTargetPathRepro.sln" (default target) (1:2) ->
"C:\Users\Brandon\source\repos\GetTargetPathRepro\ClassLibrary1\ClassLibrary1.csproj.metaproj" (default target) (4) ->
"C:\Users\Brandon\source\repos\GetTargetPathRepro\ClassLibrary1\ClassLibrary1.csproj" (default target) (2:6) ->
"C:\Users\Brandon\source\repos\GetTargetPathRepro\ClassLibrary1\ClassLibrary1.csproj" (_GetFrameworkAssemblyReferences target) (2:10) ->
"C:\Users\Brandon\source\repos\GetTargetPathRepro\ClassLibrary2\ClassLibrary2.csproj" (GetTargetPath target) (3:15) ->
  C:\Users\Brandon\source\repos\GetTargetPathRepro\ClassLibrary2\ClassLibrary2.csproj : error MSB4057: The target "GetTargetPath" does not exist in the project.

    0 Warning(s)
    1 Error(s)

Environment data

It repros with MSBuild 15.9.21.664 and 16.0.461.62831. It also repros with .NET Core SDK 2.2.106 and 3.0.100-preview3-010431

I believe it worked fine before MSBuild 15.9, but I don’t know an exact version.