Visual Studio 2017 references to code in other projects not resolved when i open the solution

I have a solution in Visual Studio 2017 where projects reference other projects in the solution; when I open the solution and I open a project the references to code defined in other projects seems not resolved (is like the other projects had not yet been loaded) I must click every single projects, expand it and then the reference are all resolved. Is there a work around to avoid this? UPDATE: I have Lightweight Solution enabled for the single solution and Resharper installed. To be clear the solution builds but visual studio show me in red references to code in other projects and i get errors in the error windows even if the building succeed UPDATE 2 As suggested by Pankaj Kapare if I disable the Lightweight modality for the solution the problem disappear but still persist if I enable Lightweight again