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flutterdartmaterialbutton

Flutter material button unicode emoji crash

My flutter windows desktop application crashes without debug logs when I add a text inside material button containing 5️⃣ preceded by letter. Someone has an idea why does it happen?

This causes a crash:

MaterialButton(onPressed: () => {}, child: const Text('p 5️⃣')))

This doesn't cause a crash, the emoji is not visible:

MaterialButton(onPressed: () => {}, child: const Text('5️⃣')))

No crash, emoji visible (although it looks differently)

Text('5️⃣')

To reproduce just create a new app from a template flutter create my_app and replace the body with a line that causes a crash.

Solution

  • This sounds like a currently a known issue:

    https://github.com/flutter/flutter/issues/107509

    Edit: If it is not this one, then perhaps you can find another one matching, or file a new issue since several emoji + text related issues are open and reproducible.