If this is intentional, then thank you so much because it made my day. Goby stacks are still 200 though ;-; ..
I noticed some of the ToT etc stacks to 400 as well (green cloth from memory monks). Most of it still stacks to 200 though, so I don't think its intentional. Also, how can you stack 700 snow? I can't stack more than 500.
If it's not intentional then I'd love to suggest it to be with common ETC drops like these as they become nothing more than a nuisance. As for the snow, I had all stacks of 500 and I noticed that they were slowly becoming 700 as I looted more.
This happened during the first day of the event. After a quick server check, it was scaled back to it's original state i.e. -200 than the current rate.
It's actually a bug, and be careful about using the item sort feature when things stack like that as it can push other items out of your inventory.
Does the glitch still happen that when you organize your inventory, the items will stack, but will revert back to it's original form thus losing the surplus amount e.g. stacking mastery books and then reverting back to only 1 book.