Formatting not working correctly

[d3buggerdan]

For some reason with my editor, the bold and italics formats work fine but formats such as underline and strikethrough don't? I tried using setFormat and I check using the hasFormat which returns true but nothing visual is shown to reflect it in the editor. Looking for any fixes thanks.

[etrepum]

Configure your theme accordingly, formatting is applied by classes from the theme. You can use the playground's css as a reference.