OK did some testing out on Kiawah Front, this is what I found...
#1... 20/25 lie from right bunker, got up and down, the sand save % remained 0%
so didn't calculate it there
#2... 30/40 lie from bunker in front of green, got u/d, the sand save % changed to 100%
so good there
#3... 20/25 lie from far right frontage road, no u/d, but the sand save % remained @ 100%
so didn't calculate it there
#4... 30/40 lie from front trap, no u/d, the sand save % changed to 50%
so good there
#5... 15/20 lie in front trap, got u/d, sand save % remained @ 50%
so didn't calculate it there
#6... 30/40 from left trap, got u/d, sand save % changed to 67%
so good there
#7... 15/20 lie from left bunker, got u/d, sand save % remained @ 67%
so didn't calculate it there
#8... 15/20 lie from right bunker, no u/d, but sand save % remained @ 67%
so didn't calculate it there
#9... 40/50 lie, yikes!, from left trap @ green, got u/d!!, and sand save % did change to 75%
so good there
So to summarize, #1, #3, #5, #7, and #8 seem to have problems with at the very least the lies that I stated hitting there. I was actually 6/9=67% but the game calculated 3/4=75%.
Hope that helps.
edit... didn't quite see it right away but the 30/40 and 40/50 lies were good, and the 15/20 and 20/25 were not. That might be the cause there. Would have to get into a different lie on the given hole to find out for sure I suppose.