Problems with crop?

[jueqing1015]

I used an image to load into PICTUREBOX, and then draw a rectangle on PICTUREBOX through the three events of MouseUp, MouseDown, and MouseMove, and then crop the image according to the Rectangle.
My magicickage
public static MagickImage PicImage;
When I first cropped according to the coordinates, the result was correct, but when I cropped the second time, it was wrong, but if I save the result of each crop to the local and then immediately use a new MAGICKIMAGE After loading, the crop is correct again, a very strange problem,
In order to verify this problem, I found another control ImageProcessor, the same code using the control is correct. I don’t know if this phenomenon is a bug or there is a problem with my method. The method I use is
PicImage.Crop(new MagickGeometry(rect));

This is a simple DEMO I made to fully reflect the problem
One is another component that I adopt, the other is MAGICK.NET
The upload is slow because MAGICK.NET is too large, because you need to download the reference yourself
Magick.NET-Q8-AnyCPU 7.17.0.0
Because it has been used MAGICK.NET smoothly, the development has been completely stopped due to this problem. Please also trouble you to verify whether it is a software problem or my operation problem. If it is my operation problem, please guide me. More urgent!

https://github.com/dlemstra/Magick.NET/files/4766136/Test.zip

[jueqing1015]

Test.zip

[jueqing1015]

Solved, it turns out that the image information needs to be reset every time the crop is completed. It is very strange why this happens.