1) No hot drinks allowed. I had just purchased a Starbucks coffee and was denied boarding until I finished it, or discarded it. ...? This was in LAX, en route to SYD, in business class.

2) Carry on weight limit of 7 KG. Was met with a bag-Nazi, who determined mine was overweight. Bag was seized and checked. Again, ...? This was in MEL, en route to SYD, in coach class. No other passengers were scrutinized this way (believe me, I watched). Also, the same bag went the opposite route three days prior, with no issues

These are both quite ridiculous IMO and soured me on the airline.