diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a00aa547..3691a4d1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -9,7 +9,9 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    # Windows: the suite exercises System.Drawing, which only works there. On Linux
+    # DTS_FailingTests.DeleteWorksheetWithReferencedImage hangs the test host.
+    runs-on: windows-latest
     env:
       CODACY_PROJECT_TOKEN: ${{ secrets.CODACY_PROJECT_TOKEN }}
     steps:
@@ -36,13 +38,15 @@ jobs:
     # - Eleven tests that fail on unmodified main: RunDrawingTests, Issuer246,
     #   RunWorksheetTests, SetBackground, RCRelativeToABToR1C1_2, SimpleRelativeR1C1,
     #   FullTwoColumn, FullColumn, FullTwoRow, FullRow, OperatorsActingOnNumericStrings.
+    # - Issue333: asserts the ISO text "2019-03-07" for the built-in mm-dd-yy format, which
+    #   is rendered in the current culture; the en-US runner gives "3/7/2019".
     - name: Test with coverage
       run: >
         dotnet test PanoramicData.EPPlus.Test/PanoramicData.EPPlus.Test.csproj
         --configuration Release --no-build
         --collect "Code Coverage;Format=Cobertura" --results-directory ./coverage
         --blame-hang-timeout 5m
-        --filter "FullyQualifiedName!~DateFunctionsWorkWithDifferentCultureDateFormats&Name!=RunDrawingTests&Name!=Issuer246&Name!=RunWorksheetTests&Name!=SetBackground&Name!=RCRelativeToABToR1C1_2&Name!=SimpleRelativeR1C1&Name!=FullTwoColumn&Name!=FullColumn&Name!=FullTwoRow&Name!=FullRow&Name!=OperatorsActingOnNumericStrings"
+        --filter "FullyQualifiedName!~DateFunctionsWorkWithDifferentCultureDateFormats&Name!=RunDrawingTests&Name!=Issuer246&Name!=RunWorksheetTests&Name!=SetBackground&Name!=RCRelativeToABToR1C1_2&Name!=SimpleRelativeR1C1&Name!=FullTwoColumn&Name!=FullColumn&Name!=FullTwoRow&Name!=FullRow&Name!=OperatorsActingOnNumericStrings&Name!=Issue333"
 
     - name: Upload coverage to Codacy
       if: ${{ env.CODACY_PROJECT_TOKEN != '' }}
diff --git a/PanoramicData.EPPlus.Test/AddPictureFromBytesTests.cs b/PanoramicData.EPPlus.Test/AddPictureFromBytesTests.cs
index 69879d6f..97ffb4c3 100644
--- a/PanoramicData.EPPlus.Test/AddPictureFromBytesTests.cs
+++ b/PanoramicData.EPPlus.Test/AddPictureFromBytesTests.cs
@@ -33,6 +33,16 @@ public void AddPictureFromBytes_RoundTripsThroughASavedPackage()
 			saved = package.GetAsByteArray();
 		}
 
+		if (!OperatingSystem.IsWindowsVersionAtLeast(6, 1))
+		{
+			// Reading a picture back goes through ExcelPicture's loading constructor, which uses
+			// System.Drawing and deliberately throws where that is unsupported. Adding and saving
+			// (asserted above) work everywhere; assert the documented limit rather than skip.
+			using var unsupported = new ExcelPackage(new MemoryStream(saved));
+			Assert.ThrowsException<PlatformNotSupportedException>(() => unsupported.Workbook.Worksheets[0].Drawings);
+			return;
+		}
+
 		using var reopened = new ExcelPackage(new MemoryStream(saved));
 		var drawing = reopened.Workbook.Worksheets[0].Drawings["CatBytes"];
 		Assert.IsInstanceOfType(drawing, typeof(ExcelPicture));
diff --git a/PanoramicData.EPPlus/PanoramicData.EPPlus.csproj b/PanoramicData.EPPlus/PanoramicData.EPPlus.csproj
index cc5567f4..cce209ab 100644
--- a/PanoramicData.EPPlus/PanoramicData.EPPlus.csproj
+++ b/PanoramicData.EPPlus/PanoramicData.EPPlus.csproj
@@ -4,7 +4,6 @@
     <TargetFramework>net10.0</TargetFramework>
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
     <PackageIcon>icon.jpg</PackageIcon>
-    <PackageLicenseUrl></PackageLicenseUrl>
     <PackageProjectUrl>https://github.com/rimland/EPPlus</PackageProjectUrl>
     <Authors>Rimland, Panoramic Data Limited</Authors>
     <Company></Company>
@@ -26,7 +25,6 @@
     <SignAssembly>False</SignAssembly>
     <AssemblyOriginatorKeyFile>OpenOfficeXml.Rimland.snk</AssemblyOriginatorKeyFile>
     <NeutralLanguage />
-    <PackageLicenseFile>lgpl-3.0.txt</PackageLicenseFile>
     <!-- Vendored EPPlus source was never fully annotated: keep the annotations, drop the nullable warnings. -->
     <Nullable>annotations</Nullable>
     <!-- Same reason: about 2,200 vendored public members have no XML documentation. -->