Seems the problem has been fixed. I'm glad :)

I just went and vended ~50 items from there and only got 2 doubles, so I really don't think this is anything bug related? Probably just a smaller item pool

Is it really normal to get these?: / .

Did you get them all or did they just show up twice or something? I didn't see any doubles in a row like that :L

I tried this, too, and got numerous duplicates. However, they were not in a row like that. I think getting duplicates is normal, but the screenshot issue doesn't appear to be.

They are in rows because I screenied them in fragmentizer and they do that in there. I would get like a plushie, a normal item and than the same plushie. Even though they are not in rows when I vend them, its still REALLY weird that I got that many. before I have not seen it do that that many times before.

In the Veta Lake one I actually HAVE gotten them in rows like that...but I suppose when you do it 500 times it's bound to happen eventually haha