It is not the first time I have noticed this and I expect it is a cultural difference but Asian people who serve in shops, such as our cheap and of often questionable freshness Asian green grocer, treat other Asian customers.
The more 'Asian' and older they are, the less politely they seem to treat each other. More than once I have seen an Asian check out girl, probably an overseas student working part time, serve an older Asian person and there is not exchange of words between them. No please, thank you, no nod. Nothing.
I have seen this overseas where rich Asian people may treat someone who serves them....well not treat really, more like not notice them. But in the case I am talking about here, the server and the one being served look neither rich nor especially well bred, for lack of a better word.
Am I judging what I see using Australian values? Am I saying they don't have Australian values? Are Australian values the right ones to have and display in shops? Is it any of my business?