There is a bug in the translation of the Search Bar on the top right of the Browser. If you select Google and search something, the result will be from Baidu, and the reault of Baidu will be Google. This bug was there till the latest build of MIUIAndroid.
The same XML is used in MI2 thats used in those phones. I wonder if there is a chance you are still flashing weeklys from all the way back to like 2.9.13, when we implemented this google/baidu change. It required a cache wipe of browser to fix.