Hi Jubril,
Thank you for contacting Syncfusion support.
The mentioned issue "Focus and Un-Focus events in SfRichTextEditor doesn't fire" works properly in Android and UWP but not in iOS. This is a known limitation. Since we implemented the RichTextEditor using WKWebView which do not support the Focus /un-focus events in iOS even though we set .
Regards,
Devaraj S