Not Bug Sock and Qualified Knitting Ball

I have hunted Qualified Knitting Ball from pigs and tried to use on the sock after opening up the UI.

It says "You have used the qualified knitting ball on the socks", but the knitting ball quantity remains the same no matter how much I tried to drop into the UI.
This bug actually made me unable to leave any map via portal. I have to change channel to enter portal again.

 

I got this problem, I just closed the sock window, reopened it, and it worked fine after.

 

I was just about to post this.

This is a common problem with the feeding UI. Happened in Easter, and happens with that Ludibrium quest where you feed the bird.

 

I am not sure it is normal or not after I used 7 balls, socks no changed

 

It's normal, it will change after 10-ish. Finishes at 30.

 

Thank you @onetwotree and @nutleafcity
It works now

 

I've used 5 and no change so far. I've also closed and opened the sock window. I hope something will change on the 10th one, will update soon.

 

takes 30