Target frameworks without dependencies are not presented in a local nuget repo

When performing search using nuget package manager in local repository, target frameworks without dependencies are not shown.
It also effecting the package install, by installing unneeded packages since the the dependencies resolution is also related to the feed:
https://github.com/NuGet/Home/issues/1243

steps to reproduce:
1. create framework 4.5.x project
2. deploy to local nuget repo , nuget package with target framework that don't have dependencies , for examples: https://www.nuget.org/packages/AutoMapper/4.2.0
3. search the package using nuget package manager
4. you will only see target framework which includes dependencies
5. install the package -> it will ask to install additional dependencies which are not relevant