write bmp3 image, it is empty

[Charltsing]

Magick.NET version

13.9.1

Environment (Operating system, version and so on)

Windows10, net framework 4.7.2

Description

2091-1.zip

MagickImage imageM = new ();
byte[] raw = File.ReadAllBytes("2091-1.bmp");
imageM.Read(raw);
imageM.Write("D:\1.bmp");

1.bmp is empty!

then set HasAlpha = false

MagickImage imageM = new ();
byte[] raw = File.ReadAllBytes(imgfullname);
imageM.Read(raw);
imageM.HasAlpha = false;
imageM.Write("D:\2.bmp");

2.bmp is fine

[dlemstra]

Thanks for providing me with sample code and an image I can use to reproduce this. But it looks like this issue has already been fixed in ImageMagick because I can no longer reproduce this with my local development build.

[Charltsing]

i try 13.7.0~13.8.0 , all work fine

This problem has appeared since version 13.9.0

[dlemstra]

My local development version uses a newer version of ImageMagick than that was used in the latest release. This will be fixed in the next release.