Only throw if ArrayToken length is lesss than 4 in ToRectangle() and fix #1238

src/UglyToad.PdfPig.Tests/Integration/GithubIssuesTests.cs

@@ -11,6 +11,20 @@
 
     public class GithubIssuesTests
     {
+        [Fact]
+        public void Issues1238()
+        {
+            var path = IntegrationHelpers.GetDocumentPath("6.Secrets.to.Startup.Success.PDFDrive.pdf");
+
+            using (var document = PdfDocument.Open(path, new ParsingOptions() { UseLenientParsing = true }))
+            {
+                var page = document.GetPage(159);
+                Assert.NotNull(page);
+                Assert.StartsWith("uct. At the longer-cycle, broader end of the spectrum are identity-level", page.Text);
+                Assert.Equal(0, page.Rotation.Value);
+            }
+        }
+
         [Fact]
         public void Issue1217()
         {

src/UglyToad.PdfPig/Util/DictionaryTokenExtensions.cs

@@ -250,8 +250,9 @@ public static PdfRectangle ToRectangle(this ArrayToken array, IPdfTokenScanner t
                 throw new ArgumentNullException(nameof(array));
             }
 
-            if (array.Data.Count != 4)
+            if (array.Data.Count < 4)
             {
+                // Should be exactly 4, but can be more (see issues 1238). We ignore the rest.
                 throw new PdfDocumentFormatException($"Cannot convert array to rectangle, expected 4 values instead got: {array.Data.Count}.");
             }