Hello Craig!
It's the same for me. I've marked it as an exception, but I'm the developer of the app so I can understand why you wouldn't want to do the same. Anyway, I've already submitted a claim to Microsoft so I hope the wrongful detection will be cleared as soon as possible.

UPDATE: Please redownload the app, I've fixed this false positive with removing a new shiny icon

Sorry for the inconveniences,
Best regards!
Vasyl Maherka