Input error when using Microsoft Pinyin

[tcztzy]

microsoft/vscode#18592 (comment)
I also met this problem. It seems to be related to the extension vscode-emacs.

After I installed and enabled the extension, once I type in Chinese by Microsoft Pinyin, it will delete the former character before cursor if able, and put the first English character in, and then finally works expected.

for example:
if I have some code like print(""), and I move the cursor between the double quote, then type in 你好, it will finally get the result print(n你好")

This problem disappear after I disable the extension or change to other input method like Sogou Input Method.