Text Comparer not Highlighting Differences

[cognophile]

Current behavior

The Text Comparer tool isn't highlight difference between text correctly and is instead, only showing the original and modified text contents again.

How to reproduce it (as minimally and precisely as possible)

1. Install latest version (version 2.0-preview.8) via Homebrew
2. Open application
3. Open Text drop-down
4. Select Compare
5. Enter text in the Original Text input
6. Enter different text in the Modified Text input
7. Inspect the Difference component - Note that highlighting is missing in both Light and Dark mode.
8. Toggle on and off Inline mode and note no change.

Expected behavior

The Difference component, whether in side-by-side or inline mode, should highlight the differences between the two textual inputs.

Screenshots

Workaround

None.

Affected platforms

macOS

Affected DevToys kind

DevToys (app with GUI)

DevToys Version

2.0-preview.8 | macOS 15.5

Relevant Assets/Logs

No response