Why are the Screen dimensions hidden when Responsive is changed to Fixed?

Here's a Design view for an app set to Responsive in Project Properties:


It's telling me I will get 320 by 650 pixels, near the top.

If I change the setting to Fixed, the pixel counts disappear.

Who designed this, Tantalus?

I thought Fixed meant you are allocating from a pre-set number of pixels in your design, and Responsive means you should take the run-time pixel count off the Screen Height and Width and work proportionately to those.

But this is reversed.

(I am looking at this orphaned app.)
BT_Walle_MKI_Radio.aia (4.6 MB)