Single screen for master -detail edit

I have created a master detail UI (order) and the main intend was to be able to edit the master-detail in a single page. However, when i click on the order list while i have the edit panel on my right, the edit panel is populated in two different tabs. What is the easiest way to keep them both in the same panel)? I have attached my demo project.

thanks for your help.

the project file s attached

demo-mortoza.7z (128.0K)

You can easily drag and drop the table from one tab to another right in the components hierarchy in Studio. Or open the screen XML and cut and paste the table definition. To give the table all available space, set it in the expand attribute of the tab.
The changed project is attached. (27.9K)