diff --git a/.github/workflows/test-macos.yml b/.github/workflows/test-macos.yml
index b46d154c04..c12e21d950 100644
--- a/.github/workflows/test-macos.yml
+++ b/.github/workflows/test-macos.yml
@@ -8,11 +8,13 @@ on:
 
 jobs:
   tests:
-    name: Test Compile ${{ matrix.build_type }}
-    runs-on: macos-latest
+    name: ${{ matrix.build_type }} on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
 
     strategy:
+      fail-fast: false
       matrix:
+        os: [macos-12, macos-13, macos-latest]
         build_type: ["Debug", "Release"]
 
     steps:
diff --git a/src/apps/testapps/testCellsToLinkedMultiPolygon.c b/src/apps/testapps/testCellsToLinkedMultiPolygon.c
index 5c903386e6..7917fcc8f8 100644
--- a/src/apps/testapps/testCellsToLinkedMultiPolygon.c
+++ b/src/apps/testapps/testCellsToLinkedMultiPolygon.c
@@ -72,6 +72,24 @@ SUITE(cellsToLinkedMultiPolygon) {
         H3_EXPORT(destroyLinkedMultiPolygon)(&polygon);
     }
 
+    TEST(pentagonChildren) {
+        // children of pentagon 0x80ebfffffffffff
+        H3Index kids[] = {0x81ea3ffffffffff, 0x81eabffffffffff,
+                          0x81eafffffffffff, 0x81eb3ffffffffff,
+                          0x81eb7ffffffffff, 0x81ebbffffffffff};
+        int numCells = ARRAY_SIZE(kids);
+
+        LinkedGeoPolygon polygon;
+        t_assertSuccess(
+            H3_EXPORT(cellsToLinkedMultiPolygon)(kids, numCells, &polygon));
+
+        // Since these are the children of a cell, we expect a single loop with
+        // no holes.
+        t_assert(countLinkedLoops(&polygon) == 1, "1 loop added to polygon");
+
+        H3_EXPORT(destroyLinkedMultiPolygon)(&polygon);
+    }
+
     // TODO: This test asserts incorrect behavior - we should be creating
     // multiple polygons, each with their own single loop. Update when the
     // algorithm is corrected.