As of yesterday (Feb 12) I am seeing inconsistent sorting of builds on the Builds tab. Prior to yesterday, builds were always sorted by upload order, with the newest at the top. As of yesterday, I am seeing the order of builds move around in the list.
In this image, I would expect the builds to be ordered with CB.008.05 at the top, since it is the most recent. Notice that all the CB.008.0X builds are scattered throughout the list.
I am not sure what is affecting the order. It seems like the region availability may be affecting the order.
The only thing that's different from my end is that some of my newer builds have a new command line format, changed from previous, older builds.