When i share an object to a project, it is hidden. To be able to see the object in the folder, I have to select the folder context "All - including hidden objects". What causes the object to be hidden? Where's the setting?
It's a strange problem.
The only difference between 'All' view and 'All - including hidden objects' are the following filters.
So, ideally, if you remove these filters from 'All' view. It will solve your problem.
But it's not recommended at all to change the default OOTB view.