Problem with Rebuild; Hides components in the Assembly

Hi,

We are facing a new issue, which we havent face before:

-When we load an assembly file, on initial loading, some components show up as hidden. So we right click the main assembly in the feature tree and select "Show With Dependants" which brings back all the hidden components. However, once we click on rebuild at any point, it hides all the same components again.
Could this be a setting problem? We tried opening it, showing all parts, then saving it. But on the next loading the same problem occurred again.

Has anyone faced something similar before?

SolidworksAssemblies