I use the Autocorrect facility intensively to make shortcuts, e.g., ;la for “Latin-American.” It works quite well, except that when I type a double or single quote, a close parenthesis, or a dash after the abbreviation, it doesn’t expand. It also doesn’t expand if the first letter is capitalized. I suspect these are just omissions rather than bugs, but in either case it is a pain in the neck. For the first problem, expansion should work for all punctuation; for the second, I suggest you offer an option for instances in which the user doesn’t want the expansion to work when initial caps is on, and make the default that it always works.
I am using the latest Writer under AMD 64-bit Linux Mint 17 on a PC.