Beams and Column without geometric representation in any view (2D and 3D)

[Anonymous]

[Revit 2020 - Windows 64 bit)

I was working in a steel structure, had already placed all columns and beams and was working on the detailing of the connections. On the next day, when i opened my project, some beams and columns representations became a line. If I change the profile, the representation returns. 

How can i solve this problem, permanently? I need to submit the project to a client but I can't get a full view of the structure in renders or at Autodesk Viewer.

[KrisAribal]

Have you check the beam family?
it's visibility settings with other beams?

[vick1z]

Can I ask question what is your LOD requirement for this project.

[Anonymous]

The LOD is set at fine. Unfortunately this isn't the problem.

[Anonymous]

Have you check the beam family?
it's visibility settings with other beams?

The problem happens with any beam family, I already used OOTB and beam family that I created. 

Where I can ajust the visibilyty settings with other beam?