Unsure if this is a bug in ibus, but if you use Terminator 0.97 with KuBunty 14.04 you will have the issue that using the multi screen input is not an option. Each character is doubled on your non active screen.
After disabling (and subsequently removing) ibus i can use it fine.
I also suspect (but have no proof) that this caused odd behavior of Thunderbird at times (random characters when typing, as if a key is stuck, but only fixed by restarting the application). If that doesn't happen anymore, ibus caused that as well.
Libreoffice cals showed the same sort of issue once, not sure if that even counts.
After disabling (and subsequently removing) ibus i can use it fine.
I also suspect (but have no proof) that this caused odd behavior of Thunderbird at times (random characters when typing, as if a key is stuck, but only fixed by restarting the application). If that doesn't happen anymore, ibus caused that as well.
Libreoffice cals showed the same sort of issue once, not sure if that even counts.