Table Chart is not visible anymore in Google Sheets

[George Petrakis]

Dear all, 

I am using Google Sheets to export and visualize my GA data (and not only) and i am linking those charts with Reporting Sites based on New Google Sites. Suddenly those specific Table charts are not visible in my google sites even if the shape is there. Check the example below: 

Do you have the same problem?? And if yes you have found a solution?

Thanks

George