diff --git a/src/voglcommon/vogl_gl_utils.cpp b/src/voglcommon/vogl_gl_utils.cpp
index 2651e2f5..15bce3e5 100644
--- a/src/voglcommon/vogl_gl_utils.cpp
+++ b/src/voglcommon/vogl_gl_utils.cpp
@@ -1344,6 +1344,36 @@ bool vogl_is_clear_entrypoint(gl_entrypoint_id_t id)
     return false;
 }
 
+//------------------------------------------------------------------------------
+// vogl_is_start_nested_entrypoint
+//------------------------------------------------------------------------------
+bool vogl_is_start_nested_entrypoint(gl_entrypoint_id_t id)
+{
+    switch (id) {
+        case VOGL_ENTRYPOINT_glBegin:
+        case VOGL_ENTRYPOINT_glPushDebugGroup:
+          return true;
+        default:
+          break;
+    }
+    return false;
+}
+
+//------------------------------------------------------------------------------
+// vogl_is_end_nested_entrypoint
+//------------------------------------------------------------------------------
+bool vogl_is_end_nested_entrypoint(gl_entrypoint_id_t id)
+{
+    switch (id) {
+        case VOGL_ENTRYPOINT_glEnd:
+        case VOGL_ENTRYPOINT_glPopDebugGroup:
+          return true;
+        default:
+          break;
+    }
+    return false;
+}
+
 //----------------------------------------------------------------------------------------------------------------------
 // vogl_get_json_value_as_enum
 //----------------------------------------------------------------------------------------------------------------------
diff --git a/src/voglcommon/vogl_gl_utils.h b/src/voglcommon/vogl_gl_utils.h
index f6841108..c86e8eca 100644
--- a/src/voglcommon/vogl_gl_utils.h
+++ b/src/voglcommon/vogl_gl_utils.h
@@ -379,6 +379,8 @@ inline bool vogl_is_swap_buffers_entrypoint(gl_entrypoint_id_t id)
 
 bool vogl_is_draw_entrypoint(gl_entrypoint_id_t id);
 bool vogl_is_clear_entrypoint(gl_entrypoint_id_t id);
+bool vogl_is_start_nested_entrypoint(gl_entrypoint_id_t id);
+bool vogl_is_end_nested_entrypoint(gl_entrypoint_id_t id);
 
 //----------------------------------------------------------------------------------------------------------------------
 // Error helpers
diff --git a/src/vogleditor/vogleditor_qapicalltreemodel.cpp b/src/vogleditor/vogleditor_qapicalltreemodel.cpp
index 107843c7..a8adbf8d 100644
--- a/src/vogleditor/vogleditor_qapicalltreemodel.cpp
+++ b/src/vogleditor/vogleditor_qapicalltreemodel.cpp
@@ -239,23 +239,26 @@ void vogleditor_QApiCallTreeModel::setupModelData(vogl_trace_file_reader* pTrace
             // reset the CurFrame so that a new frame node will be created on the next api call
             pCurFrame = NULL;
          }
-         else if (entrypoint_id == VOGL_ENTRYPOINT_glBegin)
+         else if (vogl_is_start_nested_entrypoint(entrypoint_id))
          {
-             // items in the glBegin/glEnd block will be nested, including the glEnd
+             // Nest logically paired blocks of gl calls including terminating
+             // nest call
              pCurParent = item;
          }
-         else if (entrypoint_id == VOGL_ENTRYPOINT_glEnd)
+         else if (vogl_is_end_nested_entrypoint(entrypoint_id))
          {
              // move the parent back one level of the hierarchy, to its own parent
-             pCurParent = pCurParent->parent();
+             // (but not past Frame parent [e.g., unpaired "end" operation])
+             if (pCurParent->parent() != parent)
+                 pCurParent = pCurParent->parent();
          }
       }
 
       if (pTrace_reader->get_packet_type() == cTSPTEOF)
       {
-         //found_eof_packet = true;
-         vogl_printf("Found trace file EOF packet on swap %" PRIu64 "\n", total_swaps);
-         break;
+          //found_eof_packet = true;
+          vogl_printf("Found trace file EOF packet on swap %" PRIu64 "\n", total_swaps);
+          break;
       }
    }
 }