Hi, sorry for the delayed response, I just noticed your query tonight while I was checking the beta forum.
How did you measure the inlet area?
I can confirm that your inlet BC is 1m/s and the surface parameters and goals output 1m/s but when use the measure tool to measure the area, the value is 4m^2. This can also be confirmed by using a surface parameter in the results section to report the area. You'll notice that as you improve the mesh, the area will converge to 4 m^2.
Is it possible that you had the model visible with quarter symmetry (2 sections enabled), if it was, the measure tool would only show the sectioned area which would be 1m^2.