Bugzilla

Steps to reproduce:
1. Open https://www.google.com/ (no need log-in)
2. Type `つあも`, or copy & paste it 
3. Move caret to start
4. Type random character such as aahjghjhk

Actual results:
Sometimes a vertical scrollbar appears over the last character.
Screencast: https://youtu.be/P2O1AkD12Qw

This seems to occur regardless of dark/light theme.
This seems to occur regardless of whether IME is turned on or off.
This seems to occur when the last character is a Japanese character.

Not a resent regression.

Expected results:
No such vertical scrollbar.


Work-around:
Remove css property `line-height` or `overflow-x` from the following css.
```
textarea.gLFyf, .YacQv {
    font-family: Arial,sans-serif;
    line-height: 22px;
    border-bottom: 8px solid transparent;
    padding-top: 14px;
    overflow-x: hidden;
}
```

Steps to reproduce:
1. Open https://www.google.com/ (no need log-in)
2. Type `つあも`, or copy & paste it 
3. Move caret to start
4. Type random character such as aahjghjhk

Actual results:
Sometimes a vertical scrollbar appears over the last character.
Screencast: https://youtu.be/P2O1AkD12Qw

This seems to occur regardless of dark/light theme.
This seems to occur regardless of whether IME is turned on or off.
This seems to occur when the last character is a Japanese character.

Not a resent regression.

Expected results:
No such vertical scrollbar.


Work-around:
Remove css property `line-height` or `overflow-x` from the following css.
```
textarea.gLFyf, .YacQv {
    font-family: Arial,sans-serif;
    line-height: 22px;
    border-bottom: 8px solid transparent;
    padding-top: 14px;
    overflow-x: hidden;
}
```
Alternatively, change the default Japanese font to a font other than `Meiryo`.