Are they meant to be working? Whenever you click to gather some, it says "There are not enough twigs here", and same for branches.
You can gather them near trees. If you're right next to a tree and this doesn't work, please let me know as that means something was changed.
I've been able to pick up the twigs and branches that pop up in the resources bar.
"I am a leaf on the wind, watch how I soar".