In Version 2.1.54 (b6a7760c),when I input Chinese after mathjax by using Microsoft Pinyin, a redundant letter Automatically generates.That makes Chinese input become very difficult.
For example,the “s” in the photo is an error what I refer.

Can you reproduce the problem with the latest beta version of Anki?
In Version 2.1.55 (fad1ff74),The error still exists.Two redundants letter generate this time.
