Fill in the blanks case sensitive doesn't work

The 'case sensitive' setting in the fill in the blanks module doesn't work at all, at least not inside the course presentation module. I have five statements with answers in all lowercase. When left unchecked, the case-sensitive setting requires all answers to be in lowercase; all correct answers with uppercase letters are counted as incorrect. When checked, the case-sensitive setting requires all answers to begin with capital letters; all correct answers with lower case letters are counted as incorrect, despite the answers having been set in lowercase letters. This doesn't even work when both uppercase and lowercase answers are given as alternates (eg, *correct/Correct*).