Thank you message Settings : Text only?

Hey There, I'm just working to tweak the fundraising plugin's Thank you message settings. I've got a basic fundraiser setup and the thank you message settings say that it accepts text or HTML (see attached) but the content I've got in there is HTML and it just get's outputted as text content, not generating any HTML elements.

Also in the tooltip it says we can use shortcuts for %FIRSTNAME% %LASTNAME% or %DONATIONTOTAL% in our thank you message, but these fail to output anything but themselves. Used in the Email donation confirmation, %FIRSTNAME% %LASTNAME% seem to output their proper values, but %DONATIONTOTAL% comes out with a gibberish of alpha-numerics.

I'd love any help to get some HTML capabilities in this thank you page as well as working shortcuts.