Hello, I'm a Mac User and I recently have a technical issue. I can't pinpoint when it started, but I'm going to guess when Firefox updated to the most recent one (34.0.5). The problem is: Whenever I type and go back in the middle of the sentence to add some words and if it has the letter n or m (or others that I havent tested), it deletes all subsequent words that I wrote. This happened in Facebook and Microsoft Word, to my knowledge so far. It might not be firefox problem but OsX software issue as it happened outside of Firefox, but if you could help me find the cause, that'd be greatly appreciated.