PR Details

If TextBlock is given an available space that the width is so small to fit in even one character, TextBlock will enter an infinite loop of repeatedly adding and removing the first character, and creating a new line in the wrapped text. This unexpected infinite loop will crash the editor due to a memory leak.

With this PR, the wrapped text will have at least one character (even if the character is zero width) from the original text in each new line.

(Wrap Text option disabled, horizontal overflow)

(Wrap Text option enabled with the fix, horizontal wrapped with vertical overflow. Without this fix the engine will crash eventually given enough time)

Related Issue

Fixes #2514

Types of changes

• Docs change / refactoring / dependency upgrade
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• My change requires a change to the documentation.
• I have added tests to cover my changes.
• All new and existing tests passed.
• I have built and run the editor to try this change out.