On my PRIV word substitution doesn't work if you turn off auto correct. I have my pkb autocorrect set to off, because I don't want it to correct slang, curses or other non standard word spelling. But then my word substitutions (e.g. ure = you're and ur = your) stop working.
Last year apparently BB "was aware and working on a fix" . Hoping it is fixed with Nougat, but could anyone confirm please?