[Bug Bash] Only the embedded license content of the latest version can be loaded correctly in PM UI when there are multiple versions in the same package from local feeds

[v-luzh]

Details about Problem

NuGet version: NuGet Client Dev\5.10.0.7170
VS Version: Main\31118.282
OS: Windows-10-Enterprise-20h1

Repro steps and/or sample project

1. Create a Class Library (.NET Framework 4.8) in VS and build the solution.
2. In the Developer Command Prompt for VS, cd to the project path and create a nuspec file by executing command “nuget spec”.
3. Make an image file (size limited to 1 MB with PNG format and 128x128 resolution) and locate in the package.
4. Make a License.txt and locate in the package.
5. Add following to nuspec file

<package> 
  <metadata> 
    ... 
    <icon>images\icon.png</icon> 
    <license type="file">License.txt</license> 
  </metadata> 
  <files> 
    ... 
    <file src="[ProjectPath]\icon.png" target="images\" /> 
    <file src="[ProjectPath]\License.txt" target="" /> 
  </files> 
</package> 

6. Pack the package to local path by executing command “nuget pack”.
7. Pack the same package with another version following step3-step6.
8. Create a C# Console App (.NET Framework 4.8) in VS and open PM UI of the project/solution.
9. Add the package source as a local feed in Settings->NuGet Package Manager->Package Sources.
10. Select the new added local feed in the Package source dropdown box in the PM UI and click the package on the left panel.
11. Choose a package version in the “Version” drop-down box on the right panel and click the “View License” link of every version.

Expected

The embedded license content of every version can be loaded correctly in the PM UI.

Actual

Only the embedded license content of the latest version can be loaded correctly as below.

Notes

1. Repro on both project-level PM UI and solution-level PM UI.
2. Not a regression since it start to repro from the beginning of the embedded license feature in dev-rrelyea-remotefileservice\5.9.0.14330.

[donnie-msft]

maybe related #10546

[aortiz-msft]

@v-luzh - We could not repro with packages hosted in NuGet.org which is the most common scenario.

[v-luzh]

@aortiz-msft, OK, Thanks. I changed the pipeline to Icebox.