Not able to get the correct data in multiple table view

I have created two tables named buttons and french_buttons. I am adding data to these tables using the Data Table API. When I create a view for these tables using the “Multiple Table” option, I apply an INNER JOIN condition to the table view. However, I am not getting the correct output—I can only see the values from the first table.
Please find the attached screenshots for reference.



Thanks in advance for help.