Commented Issue: automatic Package restore doesn't work for solution folder [3625]

1. Create new solution
2. Add a solution folder
3. Add a class library project to the solution folder
4. install package to class library
5. delete packages folder
6. build

Actual:
it doesn't restore packages

Expected:
it should restore packages


Comments: We're having this problem as well. This is a major blocker because it's preventing to upgrade our corporate solution (25+ projects) to the latest nuget version and workflow.