UserAgent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36

Steps to reproduce the problem:
1. Use CTRL+N to open at least 2 windows while both of them are maximized
2. On one of the window (window 1), click the URL bar and switch IME to Microsoft Pinyin and input something. By default, it's in Chinese mode. 
3. Click another window(window 2) on the win10's task bar. Click windows 2's URL bar and the Microsoft Pinyin IME changed to ENG mode from Chinese mode.

What is the expected behavior?
Microsoft Pinyin is win10's default chinese IME input.

By default config , the Microsoft Pinyin's "choose IME default mode" is Chinese.

When we switch between different chrome windows the IME mode for Microsoft Pinyin shouldn't change.
Even it changed, it should change to the default mode for some cases, it shouldn't automatically change to a non-default mode in any cases.

What went wrong?
It's possible that chrome may change Microsoft pinyin IME mode to the non-default mode.

Did this work before? N/A 

Chrome version: 55.0.2883.87  Channel: stable
OS Version: 10.0
Flash Version: Shockwave Flash 24.0 r0

There is a screen record "Recording2.mp4" in  Issue 679564 :
https://bugs.chromium.org/p/chromium/issues/detail?id=679564#c11

No need to change the Microsoft Pinyin's default config, this issue can be reproduced with both of "1 second" and "3 seconds" and "never" config for "Choose how long to show the floating IME mode icon" option.

You can see at the 1:00 of the screen record the mode is still the default mode Chinese.
Just 3 seconds later, at the 1 minute 3s of the screen record, check the bottom left side, the IME mode is automatically changed to ENG mode.