:lady_beetle: 🐞 bug emoji shows inconsistently in Issue Template

I have been experimenting with Issue and Yaml templates. In this image, you will see the [bug] emoji found in the example displayed inconsistently. In the Template Name, I embed :lady_beetle:, as I did in the Title and Text. Why is it not displayed consistently?

See Markdown Issue Template Documentation

Running Linux and Chrome 93.0.