Hello Thomas,
The non-breŠ°king hyphen is not supported. I have added a feature request for this on your behalf. You can track its progress, subscribe to status changes, and add your comment to it here: RichTextBox: Add support for non-breaking hyphens. I have updated your Telerik points for this request.
As to the issue at hand, it was fixed in R3 2022, we have tested it again (I have asked the QA team to test this as well) and it works. Perhaps there is another case where this is not working and we are missing. This is why I want to kindly ask you to provide more details about this. Perhaps if you can record a small video that shows the case where this is not working.
I want to apologize for the inconvenience this missing feature is causing you. I am looking forward to your reply.
Regards,
Dimitar
Progress Telerik
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please fix it after years of waiting
and dont forget the Non-breaking Hyphen too.