I am not able to export to excel from Tabular model , although prommised this feature at this version :
And I qoute from Microsoft docs :
"Ability to export data to Excel from a tabular visual in the Power BI Report Server so that users can analyze data"
If you hover your mouse over your visual you will see a three dot ( ... ) menu appear. If you click on that you will find the option to export the data from your visual there.