In the history pallet.
If you have many history states listed in the pallet to where you can scroll. There are times when if your viewing a early state and then use the scroll bar to pull all the way down, it should show the last state recorded. Unfortunately it sometimes doesn't. You have to click on the last one shown, then it will jump down and make visible the 2 or 3 states missing that were covered by the bottom of the history pallet, where the-button bar is for trash can, and create new snap shot and such. Somtimes changing the length of the pallet corrects the problem.
Minor bug.