Reproduction steps:
1. Open and build the attached project to iOS.
2. Open Xcode project.
3. Select the "Info" tab or open the "Info.plist file".
4. Change "Localization native development region" variable to "Japan".
5. Build to a device.
6. Click on the input field.
7. Check the right side of the keyboard input bar.

Actual behavior (Screenshots attached):
- Some Japanese symbols are replaced with "...".

Reproduced with:
2017.4.0f1, 2019.2.0a11
iPad Mini 4 iOS 11.4, iPhone XS iOS 12.0, iPad Air 2 iOS 11.0.3

Note:
"..." symbol floats and may replace different parts of the text on each run.