Ok I was playing a scenario where I generated a mission list larger than the mission list in the mission editor dialog. I went to search for a mission and couldn't find it. Long story short I found that for some reason the mission editor list vertical slider wouldn't slide to the bottom of the list unless I resized the mission editor window. I added the screenshot below to show the problem (you can see the mission highlighted in blue but you can't slide the mission list any further down to see the rest of it or what's below it). Resize the mission editor Window completely it fixes it even if you go back to the same size. Close and re-open it doesn't work so there is some property on a refresh that allows.
