I like to organize stuff on my panels, so the Drawer Item is great for this. One of my drawers I have a list of all my processor cores along with a system monitor for them. Problem is every time I shut off my PC or log out the order changes to a different order. I find it really annoying as I want the System Monitor item to always be on the top (it always reverts back to the order in the second image).
Unfortunately, that's one of the first things I tried. Doesn't matter if I lock the monitor, the cores, or both. It still reverts back to the second image.
After adding a Separator Item it began behaving strangely. They started jumping around in the drawer from session to session. Here's a picture from five different sessions: