Size and position are properties, why are they not displayed in the properties panel?
Because Position its its own panel, and basis/grow/shrink determine size. Though they are displayed under Properties if you add them as style elements...
They SHOULD be in the property panel. My question was mostly rhetorical. I know there is a separate panel.
Putting them in the properties panel implies that they are bindable, or referenceable by other bindings, or otherwise manipulable just like any other property. But they aren't, because at runtime, in a real client, they are controlled by Vision's layout operations, with scaling/repositioning/resizing outside of direct control. The values in the designer are not the final runtime values.
Putting them in the properties panel would be misleading.