Prerequisites

• Put an X between the brackets on this line if you have done all of the following:
  • Reproduced the problem in Safe Mode: http://flight-manual.atom.io/hacking-atom/sections/debugging/#using-safe-mode
  • Followed all applicable steps in the debugging guide: http://flight-manual.atom.io/hacking-atom/sections/debugging/
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  • Checked that there is not already an Atom package that provides the described functionality: https://atom.io/packages

Description

Cursor stuck at the first letter when using macOS built-in Chinese pinyin IME.

We expect to input some characters first, and choose a word in IME panel. But from 1.19.0 (maybe beta 1), the cursor always stucks at the first letter. Although I can still type Chinese correctly under the circumstances., it is more helpful to see what you are typing out.

Steps to Reproduce

Expected behavior:

In 1.18.0, it looks well.

Actual behavior:

However, the cursor moves no more in 1.19.0-beta2.

Reproduces how often: every time

Versions

OS: macOS Sierra 10.12.5
Atom : 1.19.0-beta2
Electron: 1.6.9
Chrome : 56.0.2924.87
Node : 7.4.0

Additional Information

At first, I dived into source code to search for the problem. Soon, I overwhelmed with the large codebase of Atom. I cannot figure out which commit producing this bug. If anyone can point out which part may produce this problem, I can help to solve it. Thanks :)