I have a Galaxy S4 running KitKat on stock firmware. However, I notice that Firefox doesn't seem to play well with third-party keyboards on the search bar. This has happened since I purchased my S4 about one year ago, and even after numerous factory resets and firmware upgrades etc. the problem still persists. This is the main reason why I moved away from Firefox. So I thought one year on, Firefox would be better, but nada. On the default Google and Samsung keyboards it seems to work just fine, but I use third-party keyboards on a daily basis. On Kii Keyboard and Swype, I get the following issue on the search bar: When I click on the search bar and start typing, On Kii Keyboard and Swype: - The first word turns out fine. For the second word, it turns out fine as well. However, once I spacebar after the second word, the underline below the second word disappears, but a space is not entered. Therefore, I have to spacebar twice for the space to appear. On SwiftKey: - Words are generally eaten up. So when I type 'SwiftKey' usually something like 'Swky' comes out instead. Only when I type real slowly do my words not get eaten up. I don't get this performance issue on other web browsers like Chrome and Dolphin so I thought Firefox is the main culprit here.