Added test case for issue #2983.

tests/ImageSharp.Tests/Formats/Tiff/TiffDecoderTests.cs

@@ -833,4 +833,9 @@ public class TiffDecoderTests : TiffDecoderBaseTester
     [WithFile(ExtraSamplesUnspecified, PixelTypes.Rgba32)]
     public void TiffDecoder_CanDecode_ExtraSamplesUnspecified<TPixel>(TestImageProvider<TPixel> provider)
         where TPixel : unmanaged, IPixel<TPixel> => TestTiffDecoder(provider);
+
+    [Theory]
+    [WithFile(Issue2983, PixelTypes.Rgba32)]
+    public void TiffDecoder_CanDecode_Issue2983<TPixel>(TestImageProvider<TPixel> provider)
+        where TPixel : unmanaged, IPixel<TPixel> => TestTiffDecoder(provider);
 }

tests/ImageSharp.Tests/TestImages.cs

@@ -1164,6 +1164,7 @@ public static class TestImages
         public const string IptcData = "Tiff/iptc.tiff";
 
         public const string Issue2909 = "Tiff/Issues/Issue2909.tiff";
+        public const string Issue2983 = "Tiff/Issues/Issue2983.tiff";
 
         public static readonly string[] Multiframes = [MultiframeDeflateWithPreview, MultiframeLzwPredictor /*, MultiFrameDifferentSize, MultiframeDifferentSizeTiled, MultiFrameDifferentVariants,*/
         ];