Issue Summary

using the 'Shift+Enter' keyboard shortcut to insert a line break, a half-width space is entered instead of the line break.

Steps to Reproduce

1. In Chrome, open Jira/JSM page
2. open comment or Description field
3. add text(Japanese) and input 'Shift+Enter' to insert a line break.

Expected Results

You can insert a line break.

Actual Results

You will see a half-width space is entered instead of a line break sometimes.
Jira_shift_enter_shortcut_test.mov
After input "かきくけこ", Shift+Enter became half-width space.

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available.
It looks on Chrome browser, we can't reproduce it on Firefox.