Search Issue Tracker

Fixed in 2020.1.X



Found in




Issue ID




ArgumentOutOfRangeException is thrown when deleting Japanese characters in Input Field



How to reproduce:
1. Open attached project "Case_1201105"
2. Load "SampleScene"
3. Make sure you have Japanese IME installed
4. Enter Play Mode
5. Start rapidly typing "a" (あ using Japanese IME) and backspace
6. Enter and delete the character ~50 times

Expected result: you can type and delete Japanese characters with no errors
Actual result: quickly typing and deleting Japanese characters throws an exception:
"ArgumentOutOfRangeException: Index and count must refer to a location within the string.
Parameter name: count"

Reproducible with: 2017.4.35f1, 2020.1.a15

Notes: Bug occurs very rarely, between 3 and 200 cycles of entering and deleting a character with the average being ~40-50. Significantly easier to reproduce using Unity Editor on iOS due to faster working IME (in order to reproduce more consistently on Windows, Build and Run the project). Reproducible using both default Input Field and the TextMeshPro Input Field.

  1. Resolution Note (fix version 2020.1):

    Fixed in 2021.2.0a15

Add comment

Log in to post comment

All about bugs

View bugs we have successfully reproduced, and vote for the bugs you want to see fixed most urgently.