I have got a strange bug when using dilate on a skeleton, see attached image DilateBug.png. When saving the image before dilating and then open the image and dilate it works OK, see attached image DilateOK.png. It does not matter which structuring element that is used, I have tried disk 3, disk 7, disk 15, square 3, etc., all with the same result.
I have attached the pipelines I have used and input and resulting images.
debug.zip (2.99 MB)