IME problem for Chinese input

[iLoveBug]

there is an annoying problem when I try to input some Chinese word. for example:

I want to input the word "好", which should be composed by an input with "hao", but the first "h" will be duplicated in the value, as shown in the screenshot.

[apfelbox]

Is this a duplicate of #548 ?

[kevinansfield]

Closing as a duplicate of #589

[iLoveBug]

After search the list, I realized this is a long story more than 2 years, and no one really fix this problem. So I gave a try. Please review my pull request: TryGhost#11, which fixed this problem perfectly on Chrome. but still have problem on Safari.