--- old/src/hotspot/share/gc/g1/g1ConcurrentMark.cpp	2020-06-10 10:12:02.776969261 +0200
+++ new/src/hotspot/share/gc/g1/g1ConcurrentMark.cpp	2020-06-10 10:12:02.684966104 +0200
@@ -1146,8 +1146,6 @@
       ClassLoaderDataGraph::purge();
     }
 
-    _g1h->resize_heap_if_necessary();
-
     compute_new_sizes();
 
     verify_during_pause(G1HeapVerifier::G1VerifyRemark, VerifyOption_G1UsePrevMarking, "Remark after");