Issue #2556069 by claudiu.cristea, bnjmnm, lauriii, pfrenssen, Tim Bozeman,...

Issue #2556069 by claudiu.cristea, bnjmnm, lauriii, pfrenssen, Tim Bozeman, marcvangend, ikeigenwijs, Wim Leers, kevinquillen, esclapes, nod_: JS error with elements in "allowed HTML tags" that can't be direct descendants of a div

(cherry picked from commit 88498c78)