How to reproduce:
1. Open user-submitted project project.zip
2. Open Scene “Scene”
3. Make sure that Chinese Language keyboard layout is selected(simplified Mandarin)
4. Press Play
5. Type chu'nian or po'k'gai into the Input Field and select the first suggestion

Expected result: There are as much characters in the input field as it was in the suggestion field when typing
Actual result: One or two characters go missing when put into the Input Field

Reproducible with: 2018.2.0f2, 2018.3.0a5
Not reproducible with: 2017.1.4p2, 2017.2.3p2, 2017.3.2f1, 2017.4.6f1, 2018.1.7f1

Note: The characters show up when copying and pasting into the Input Field, but when typing it in, some characters in words are not entered