--- old/src/hotspot/share/gc/shenandoah/shenandoahConcurrentMark.cpp	2020-05-29 12:30:43.062644020 -0400
+++ new/src/hotspot/share/gc/shenandoah/shenandoahConcurrentMark.cpp	2020-05-29 12:30:42.926643188 -0400
@@ -267,9 +267,10 @@
       }
     }
 
-    if (heap->is_degenerated_gc_in_progress()) {
-      // Degenerated cycle may bypass concurrent cycle, so code roots might not be scanned,
-      // let's check here.
+    if (heap->is_degenerated_gc_in_progress() || heap->is_full_gc_in_progress()) {
+      // Full GC does not execute concurrent cycle.
+      // Degenerated cycle may bypass concurrent cycle.
+      // So code roots might not be scanned, let's scan here.
       _cm->concurrent_scan_code_roots(worker_id, rp);
     }