I just came back to the game this week; sorry if I'm posting this in the wrong place but I wanted to share as I'm near certain this is a bug.
I have been skilling up alchemy and trading items to get guild points. Everything has seemed normal until today. I went to look what item was requested, Beeswax, and when I traded it to the NPC I received 62976 guildpoints. They also usually say thanks when I give them the item this time they didn't say anything.
Here is the screenshot, you will need to click on the picture to get the fullscreen resolution.