Since the last patch they have added a lot of restrictions to the Trading Post which were not mentioned on the patch notes.
Previously I was able to sell as many items as I wanted to and in any quantity.
After the new patch, there is a maximum quantity you can list per item. For example:
Satisfying meal = 100 per listing
Water = 10k per listing
I still have sell orders before this patch of 30k+ water and a listing of 400 satisfying meals.
Why did they change this and not mention it in the patch notes?