Regulatory failure noted

Am I the only person flabbergasted that a high rise apartment building in Melbourne can start to burn up because of cigarette flung off a balcony?

MFB Fire investigators spent most of the day at the apartment building and concluded that the most probable cause was a discarded cigarette that ignited combustible materials stored on the balcony.

The only mild encouragement from that is that at least it doesn't mean that the cladding itself was directly ignited by the cigarette butt.   Some small comfort, though.   The building was apparently audited for safety for its cladding after the Grenfell Tower disaster.

Seriously, what were architects, builders and regulators thinking when putting any "combustible in the right circumstances" material on a high rise building?     Has this practice stopped completely yet?