Gradients Swatch Box Snaps Back
When expanding the box to see your gradient fill it immediately snaps back to the letterbox default. I cannot gauge the color gradients very well without enlarging the viewable gradient area.
Its a bug that needs fixing.
Please get in touch with us at any of the other support channels – https://helpx.adobe.com/support.html . Since this is not a generic issue that we can reproduce at our end, we will need someone to look into your machine to figure out what is going on here.