faulty conditions generated when using condition attributes

[smoothdeveloper]

Faulty conditions get generated:

strategy: max
source https://www.nuget.org/api/v2
redirects: on
framework: >= net40

nuget MBrace.Core condition: Azure
nuget MBrace.Flow condition: Azure
nuget MBrace.Runtime condition: Azure
nuget MBrace.Azure condition: Azure
nuget MBrace.Azure.Management condition: Azure
nuget Microsoft.Azure.Management.Compute prerelease condition: Azure
nuget Microsoft.Azure.Management.ResourceManager prerelease condition: Azure
nuget Microsoft.Azure.Management.Sql prerelease condition: Azure
nuget Microsoft.IdentityModel.Clients.ActiveDirectory condition: Azure

  <Choose>
    <When Condition="'$(AZURE)' == 'True' And ()">
      <ItemGroup>
        <Reference Include="System.Data">
          <Paket>True</Paket>
        </Reference>
        <Reference Include="System.Xml">
          <Paket>True</Paket>
        </Reference>
        <Reference Include="System.Xml.Linq">
          <Paket>True</Paket>
        </Reference>
      </ItemGroup>
    </When>
    <When Condition="'$(AZURE)' == 'True' And ()">
      <ItemGroup>
        <Reference Include="Microsoft.WindowsAzure.Storage">
          <HintPath>..\packages\WindowsAzure.Storage\lib\net40\Microsoft.WindowsAzure.Storage.dll</HintPath>
          <Private>True</Private>
          <Paket>True</Paket>
        </Reference>
      </ItemGroup>
    </When>
  </Choose>

I'm making a failing integration test case in a PR.