Issue Summary

Typing multi-byte characters in the first row of the table duplicates the text
画面収録 2022-02-14 20.47.34.mov

Steps to Reproduce

1. Insert a table
2. In the first row(doesn't have to be a header row), enter two lines of texts
3. In the first line, start typing characters

Expected Results

The characters are entered and nothing else happens

Actual Results

The characters are entered, plus the second line is automatically duplicated as a third one

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available