With the new change that shows in chat what we harvest, I noticed that when I harvest lumber, I also get a message that sawdust was harvested as well.
[i][color="#669966"]Esmaralda collects lumber and sawdust as a byproduct[/color][/i]
However, it does not appear in my inventory. The sawdust never did before either when I already had 1 sawdust in my inventory and I always assumned that if you already had 1 sawdust, you cannot get more (if I was to pass it to someone and harvest again, I would get the sawdust).
However, now that it actually says in chat that I do get a sawdust, I'm thinking this is a bug.