Hi Adewale,
Thank you for contacting Syncfusion support.
Currently, we do not have support for the mentioned requirement ”Set Content Height Automatically”. We have planned to include the support “Auto size in SfRichTextEditor” in our Essential studio 2020 volume 1 main release which is estimated to be available by March 2020 tentatively. The status of implementation can be tracked through our feedback portal link.
Kindly let us know if you require any further assistance.
Regards,
Devaraj S