Here are the details: Place the Default title on the timeline, then open it up and check the Apply shadow checkbox. Set the Shadow distance to any number but 0, then save the title. When you open the title again, the shadow will be drawn correctly, but the distance setting will be approximately double the original value
(I say approximately double, because if you set the distance to 2, it will be 4 when you reopen it; 4 becomes 7; 9 becomes 17; and 15 becomes 28 - at least on my system).
By itself, that isn't a big deal since the title is still drawn correctly, but it's a real problem if you need to edit the title because any new/changed text will be drawn with the incorrect (and much larger) shadow distance. You can correct the distance before you save, but it's a real pain to do this every time, especially if you have a master title and then copy it and modify the text each time.
I've made a video that documents everything I've found, and you can watch it here. If anyone can confirm that they have the same problem, I'll report the issue to Tech Support.
YouTube/optodata
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