Always build occasional lists on first step

src/compute_aggregate_atom.cpp

@@ -121,7 +121,7 @@ void ComputeAggregateAtom::compute_peratom()
 
   // invoke full neighbor list (will copy or build if necessary)
 
-  neighbor->build_one(list,1);
+  neighbor->build_one(list);
 
   // if group is dynamic, insure ghost atom masks are current
 

src/compute_cluster_atom.cpp

@@ -113,7 +113,7 @@ void ComputeClusterAtom::compute_peratom()
 
   // invoke full neighbor list (will copy or build if necessary)
 
-  neighbor->build_one(list,1);
+  neighbor->build_one(list);
 
   inum = list->inum;
   ilist = list->ilist;

src/neighbor.cpp

@@ -2144,7 +2144,7 @@ void Neighbor::build_one(class NeighList *mylist, int preflag)
 
   NPair *np = neigh_pair[mylist->index];
 
-  if (preflag) {
+  if (preflag || update->firststep == update->ntimestep) {
     if (np->last_build > lastcall) return;
   } else {
     if (np->last_build >= lastcall) return;