The images are renamed after upload. How to preserve the original image name with PicManager?

The images are renamed after upload. How to preserve the original image name with PicManager?

Our extension doesn't support special symbols in image names. When you upload an image, any special symbols are replaced by "_20." For example, if your image is named "test image.jpg," it will become "test_20image.jpg" after uploading. To prevent this, avoid using special symbols in your image names.