chrome --mus with official input method package copied from device into /usr/share/chromeos-assets. From settings, add Chinese language and Pinyin input method.

Change the input method to Pinyin and type "ni hao". Click on the candidate. Expected behaviour is that candidate should be confirmed and the text in textbox should change, but currently composition cancels and the text in textbox doesn't change.

Note that if instead of clicking we press the shortcut key for the candidate, it works as expected. For example, pressing '2' confirms the 2nd candidate.