[Bug] missing text when export to markdown or pdf

[Ray8716397]

Bug Description

There are some texts are missing when i export to markdown or pdf

How to Reproduce

cd appflowy-editor/example
flutter run -d linux

import from document json
export to markdown|pdf

files:
tttt.json

tttt.md

Expected Behavior

should be the same

Operating System

ubuntu24

AppFlowy Editor Version(s)

latetest

Screenshots

Additional Context

No response

[chenjun1127]

same too

[LucasXu0]

Which function did you call to convert the document to Markdown?

[Ray8716397]

Which function did you call to convert the document to Markdown?

this function，appflowy-editor/example/lib/home_page.dart(line386):
void _exportFile(
EditorState editorState,
ExportFileType fileType,
) async {
var result = '';

switch (fileType) {
  case ExportFileType.documentJson:
    result = jsonEncode(editorState.document.toJson());
    break;
  case ExportFileType.markdown:
    result = documentToMarkdown(editorState.document);

oh I see the result value is correct by print(result), but why the md text display on the app are not correct after i click the 'Export to Markdown' button