I am testing Sentinel-1 as primary data source, having timespan selected, added to Sentinel-1 mosaicking: Mosaicking.ORBIT. As additional data source there is also Sentinel-2.
Timespan is selected to get at least 2 images for each data source.
If I put as output Sentinel-2, like first image in array, for example
And compare generated image by OE Browser if I select Least recent or Most Recent mosaicking order, images are different as expected.
If I do similarly for Sentinel-1, changing Mosaicking order between Least recent and Most Recent does not generated different image. It seems that always Most Recent Mosaicking order is applied.