Could you escalate this problem to the team?
Some Japanese users reported a problem while inputting Japanese with grid cell.
It occured on IE/Chrome. So I believe this is ParamQuery problem.
Using ParamQuery Pro 4.0.2:
1)Symptoms:
This occured first character only, after that everything normal.
But this is very frustrating while inputting Japanese.
Type "a" as a Japanese "あ"
・Chrome
Enter 「ああ」to「aあ」
・IE11の場合
Enter 「ああ」to「あ」
Screencaputure:
I will attach a screencapture as a movie.
2)Desired movement
Enter 「ああ」to「ああ」
reference)
https://productforums.google.com/forum/#!topic/docs/rLVtmvjutUs;context-place=forum/docs