Fix for assembling mixtures made of isomere elements. (#8556)
Fix for assembling mixtures made of isomere elements. (#8556)


olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root