I'm very new to Blender (10 hours in!), and I'm coming across a problem I haven't been able to successfully google.
I have an object casting a shadow on a plane. I'm using an Area light pointing straight down slightly in front of the object, and Cycles for the rendering engine as I want everything except the object and its shadow to be rendered transparent. I believe I may have used shadowcatcher, but I can't find the setting for it, so unfortunately I'm not sure.
As you can see from the attached image, the object appears to be cutting itself out of its shadow and I can't see a reason for it. Even though the plane is set to transparent, I've set every texture option to 0 to get rid of reflections, in case that's what was happening, but that changed nothing.
Any help is very much appreciated, but if the solution is very technical then I'd be very thankful if it could be explained for a dummy ;)
Update: I have since asking reproduced the file from scratch (a number of times..), tried turning down every setting for reflection I can imagine, as well as turning off Glossy in Object Properties/Ray Visibility.
I have attached a file without my texture (business sensitive), and I could see the color from that reflected in the plane below. Thus, I believe it's some kind of reflection from the sides of the card cutting the shadow.