On Wed, 15 Apr 2026 21:13:39 GMT, Thiago Milczarek Sayao <[email protected]> 
wrote:

>> `GetStringUTFChars` returns a modified UTF-8 string  that encodes 
>> supplementary characters differently from standard UTF-8, so emojis may not 
>> be handled as expected by GTK or other Linux desktop components that expect 
>> standard UTF-8.
>> 
>> See:
>> https://www.oracle.com/technical-resources/articles/javase/supplementary.html
>> https://www.javathinking.com/blog/what-is-the-java-s-internal-represention-for-string-modified-utf-8-utf-16/
>> 
>> There are other places where `GetStringUTFChars` is used, such as in the 
>> file open dialog, but it’s unclear whether this is affected in any real user 
>> scenarios.
>> 
>> Using the sample from the bug report with this fix:
>> <img width="778" height="574" alt="image" 
>> src="https://github.com/user-attachments/assets/6a66a746-2239-465d-ad5f-688933deb537";
>>  />
>> 
>> 
>> ---------
>> - [x] I confirm that I make this contribution in accordance with the 
>> [OpenJDK Interim AI Policy](https://openjdk.org/legal/ai).
>
> Thiago Milczarek Sayao has updated the pull request incrementally with one 
> additional commit since the last revision:
> 
>   Added method description

Marked as reviewed by kcr (Lead).

-------------

PR Review: https://git.openjdk.org/jfx/pull/2150#pullrequestreview-4117259490

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