I initially didn't understand that I needed tanning to make leather and tried making leather in my tanner without any tannin, it will take the raw skin and act as if it is making leather but then use up the raw skin and produce no leather. Any one notice this?

When you have one of the status screens up like the workload screen up and the game changes from one season to the next the open status screen won't automatically update. You have to close it and reopen it for it to update. Like it would be showing all the berry picking jobs for summer but when the game moved into winter it would not automatically show that all those task were automatically gone.