I made a mistake in one of my options, highlighted it, hit delete, and the top (1st) option I entered was removed.  Strange, I thought, so I tried it again...same result. I tried it again...same result.  I created a new survey...same result. 

One thing you could try to reproduce it (and I should have mentioned it in the first place, I think) is to use the view ordering feature.  I add 7 options using 10,20,30,40,50,60,70...then try to delete the last option added.  Does it every time. It deletes the first option added, though I have the last option highlighted when clicking the delete icon.

I logged it:

SUR-5883

It wont make the release that I'm submitting to the release tracker this weekend, but I'll fix it for the next release. this problem has actually been there for a long time but I could never reproduce it. Sometimes the list would not "act correctly". It wasn't until now that I can see it's the last item in the list that is "broken".

Thank you for your assistance on tracking this down.