fix index pair bonds order assignment

CHANGELOG.md

@@ -6,7 +6,10 @@ Note that since we don't clearly distinguish between a public and private interf
 
 ## [Unreleased]
 
+## [v2.3.5] - 2021-10-19
+
 - Fix sequence viewer for PDB files with COMPND record and multichain entities.
+- Fix index pair bonds order assignment
 
 ## [v2.3.4] - 2021-10-12
 

src/mol-model/structure/structure/unit/bonds/intra-compute.ts

@@ -79,7 +79,7 @@ function findIndexPairBonds(unit: Unit.Atomic) {
             if ((d !== -1 && equalEps(dist, d, 0.5)) || dist < maxDistance) {
                 atomA[atomA.length] = _aI;
                 atomB[atomB.length] = _bI;
-                orders[order.length] = order[i];
+                orders[orders.length] = order[i];
                 flags[flags.length] = flag[i];
             }
         }