Sharpen AI - Slight artifacts introduced at top of sky in sharpened images

Upgraded to latest version (1.13?). When using Sharpen on images with blue skies, a few results had some slight reddish artifacts at the very top of the image. This didn’t occur in the Stabilize or Focus modes. Other than that, Sharpen AI is pretty phenomenal!

I believe this may well be a known issue but please raise a support request using the Need Help? link at the top of the page.