Well I just updated to official kit kat 4.4.2 stock with root. I notice after I enable xposed wanam module the Samsung keyboard loses the auto replace function when u type in a misspelled word and it fixes it after u press the spacebar. There is no option in wanam to either enable or disable the function so I don't see how it affects it. However I know it is the problem because I've done clean install 3 times now and every time after I install xposed module the function is gone.