Paket resolving analyzer incorrectly in multi-target project

AnalyzerIssue.zip

Description

paket resolving non-existent analyzer

Repro steps

Unzip attached solution and build. You will see a compiler error -
1>CSC : error CS0006: Metadata file '.nuget\packages\nservicebus\5.2.26\analyzers\dotnet\cs\NServiceBus.Core.Analyzer.dll' could not be found

Expected behavior

This is a multi-target project - net461 and netstandard2.0
Analyzer is available only in one version of the dependency (NServiceBus 7.x has while NService 5.x doesn't). Paket should resolve the analyzer only netstandard2.0

Actual behavior

analyzer is resolved for both net461 (incorrectly) and netstandard2.0 (correctly)

Known workarounds

As described here - https://github.com/DotNetAnalyzers/StyleCopAnalyzers/issues/1711 - changed my project file to conditionally remove analyzers -

<?xml version="1.0" encoding="utf-8"?>
<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <TargetFrameworks>net461;netstandard2.0</TargetFrameworks>
    <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
  </PropertyGroup>
  <Target Name="DisableAnalyzersForVisualStudioBuild" BeforeTargets="CoreCompile" Condition="'$(TargetFramework)' == 'net461'">
    <ItemGroup>
      <Analyzer Remove="@(Analyzer)"/>
    </ItemGroup>
  </Target>
  <Import Project="..\.paket\Paket.Restore.targets" />
</Project>

Start by unpacking and building the attached AnalyzerIssue.zip solution, then inspect the multi-target project and its imported .paket/Paket.Restore.targets. Compare the analyzer references generated for net461 and netstandard2.0; done means the analyzer is resolved only for netstandard2.0 and the net461 build no longer reports the missing metadata file.