that's already working, as if multiline text sharepoint columns contain html code that can be edited as text, and wieved as html too with the HTML text control.
However there is no editor yet to edit html text in a WYSWYG manner.
Seems nice. Could inject in the sharepoint list's edit all form, but editing seems full of bugs - could not select text. Maybe it isbecause i had tables in my original html.
Hey everyone we have released the preview of our Rich text editor control (marked as experimental for now). For more details, see the docs:
https://docs.microsoft.com/en-us/powerapps/maker/canvas-apps/controls/control-richtexteditor