After building NX3 using NX3, I went to Browse UI to make sure the repos had populated right and I noticed that Dev and Central were empty.
I checked sonatype grids (snap and release) and they had contents and went back to Dev/Central and they then also had content.
On refresh, I had the same issue (see vid).
I had not noticed this before but it may be related to a specific content or I may have gotten lucky. I did not check a second time (erasing contents) to see if this is easily reproducable.
I doubt this affects NX2 and isn't easily comperable but didn't check at this time. I also didn't check older versions of NX3 but because Browse UI is new to Edgy.
I'm very confident this is unrelated to the linked but linking for completeness.
Debug was on during this test.