I enter in the word I want to replace and the new word, hit new, and then okay to close the dialogue box. When I try to use the new entry, nothing happens. The new entry is no longer in the autocorrect replacements.
Operating System: Windows 8
Version: 126.96.36.199 release
thank you for reporting. This issue has been reported some time, and the fix is already on it's way. See bug 67743
Regards - Cor
*** This bug has been marked as a duplicate of bug 67743 ***