When collaboratively editing a page, unable to enter text using some IME language tools

Steps to reproduce:

1. Multiple users are collaboratively editing a page in Confluence
2. While both users are typing one user attempts to input text for a language that requires an IME input method (e.g. Japanese, Chinese, Korean)

Expected Results:

      Both users are able to edit the page without problems

Actual Results:

      The user attempting to enter characters via IME input method are unable to select the desired characters.

This issue is reproducible using Chrome, Safari and Internet Explorer. 

Workaround:

1. Use Firefox browser
2. Use the Google Input Tools chrome extension in Chrome Browser. (Not working for Korean)