Hi Jan,
Greetings from Syncfusion support.
We have validated your query “To provide the support overline in Rich Text Editor”.
We have consider “To provide the support overline in Rich Text Editor” as feature from our end and logged the report for the same, and the fix will be included in any of the upcoming release.
You can now track the current status of the report, review the proposed resolution timeline, and contact us for any further inquiries through this link:
Regards,
Revanth