Loss of custom styles

[Alex-Brines]

Hi, there's a feature that allows you to add custom styles when selecting text. The problem is that when you select styled text and type directly, the style is lost. If you delete the content and type again, it works perfectly.

I pass a screenshot

This is a example URL

https://codepen.io/alexbrines/pen/EaabpRx

[JiuqingSong]

The format is removed here

roosterjs/packages/roosterjs-content-model-dom/lib/modelApi/editing/getSegmentTextFormat.ts

Line 17 in 5bbab35

const textFormat: ContentModelSegmentFormat = {

Maybe we need to consider an easier way to keep customized property rather than always require a parser/applier.

I need to to think about it.