yes and no
not the spitting 9r public deficition
and i have video evidence of queing to buy meat at spring festival time
(yeah i couldn't believe it either)
but some have the my shit don't stink attitude and will try bargin in a supermarket.(and get away with it sometimes)
you can take a Chinese out of China bot you cat China out of Chinese

Some have tried... and been arrested or fined! eg, attempting to bribe police and other officials, cheating on exams or essays at universities (resulting in expulsion and deportation), shady business practices (leading to some nasty consequences).

Fortunately, some who choose to go overseas do so because there are things that they don't like about the mainland, and so can be more willing to aculturate... unfortunately, not all :( (perhaps, not even many... I met a Chinese guy who said he used to study in my hometown... I said a suburb - and yep, that's where he lived! Why?? Because that's where ALL Chinese live*!)

*stereotype

I don't know any new Chinese immigrants in my hometown but the long termers have always come across as respectful and hard working. 

Though in the UK the long term Chinese immigrants moved back in the 60's and 70's from Hong Kong, Macau and Guangdong and were quite poor to start with and had to work hard to fit in with quite a racist culture at the time. 

95% of Chinese students abroad do, in that they continue to speak only Chinese and eat noodles

Some Chinese that I have seen in my country follow the adage 'While in Rome.....', they are adapting local culture, learning the language and blending in the social circuit. And they are successful there.

On one end of the spectrum you have the people who live in Chinatowns. They push and shove, occasionally spit, make that "hawking" sound and haggle with the best of them. I've never seen them peeing or worse on the street, though. They must understand that anyone doing that would get in big trouble.  They are able to conduct 99% of their lives in Chinese without learning much English.

In the town where I live, we are starting to see some of the Parachute Kids. Rich parents send their children to live with host families in the US and attend either private or public schools. The idea is for them to learn English and increase the chances of getting into a good American university. The reality at the local public high school is a little different. They all hang out together and speak Chinese. My son says they wear Yeezy sneakers and are covered head to to in labels, which is quite different from the casual preppy style that most of the other students have. They tend to behave in a very arrogant way, like the same class of people do back in China.

Their presence has certainly increased the need for ESL services at the school. I'm not sure I feel about the tax payer footing the bill for that.

Somewhere in the middle are the educated professionals who have lived in the US for a while. They generally behave well and speak a reasonable amount of English. They do retain certain Chinese traits, like single-mindedness when it comes to achieving their goals for themselves or their kids. 

they r same as here. mostly people behave as they inherintly r, wherevr they go.

For clarity, I'm writing this as a former expat currently living in Germany with my Chinese wife and 2 kids.
In my experience, no. They can be industrious, exploitative, or have serious cultural chauvinism. But most of the worst mainland behaviourisms are toned down. They know they're not in their own country.

I experienced firsthand that there is an identity crisis in the Chinese community. They divide themselves along ideological lines with regards to the perception of their Chinese identity. A lot of them don't get along with each other because of their chosen ideological position.

Some actively assimilate into the majority culture of the country. We have friends just across the border in Holland, telling us we should abandon Chinese learning for our kids, come live in Holland and learn Dutch. We have a different view about our priorities and the value of Chinese language, so suffice to say the friendship has been strained from the start.

These kind of 'assimilation'-type Chinese immigrants, for want of a better word, look down on Chinese language, culture and identity. They can scoff at people who retain their language and culture, equating it to supporting the CCP regime's wrongdoings, and being essentially a seditious foreign agent. Arguments can go from valid half-truths all the way to paranoid imaginings that even the bitterest of expats in China would distance themselves from. I get the impression I am seen as a race traitor for not being a chauvinist of my own Dutch cultural background, which they have chosen to assimilate to. But Dutch culture doesn't think highly of copycats and wannabes. Following the majority is a typical Chinese cultural trait, not common to individualist western societies. Perhaps they don't realize how little respect they command, by being willing dancing bears for Dutch cultural chauvinism.

Then on the other side of the spectrum, there's the Han chauvinists, or Cantonese chauvinists as determined by their heritage. They stick close to their own culture, they created Chinatowns in the past, and mostly keep to their own community. They also harbour extreme opinions, views about their own alleged superiority and so on. Mostly they are quiet about it, but no matter how much they avoid confrontation between reality and their wordviews, they live in a western country. Well, technically Germany is Central European, but I live close enough west to consider the region Western.

If you have an interracial family like ours, who wishes to at least keep Chinese language alive with our kids, then it's an awkward balance. We can't really be part of the assimilation group, nor fully part of the chauvinists. Thankfully, my wife is well liked when people meet her, so she has friends of all ideological backgrounds. But never super close, because of the different values.

From experience, I have heard many accountings of assimilation-types who regret their choice. Their children can't speak Chinese, or they grew up without learning the language their ethnic peers speak. It was a mistake, and it leads to identity confusion. The ones who haven't reached the conclusion yet, are struggling with denialism. What do you tell your ethnically Chinese children when their Dutch classmates make the mistake of calling them Chinese? Pull the racism card?

Overall, Dutch culture is pragmatic and business-oriented. We wouldn't throw away an opportunity for our kids to learn a world language because of some poorly-considered ideology. I choose to keep my kids' options open, so if they want to be seen as fully Dutch, or haf-and-half, they can choose their own path. Though I'd strrongly urge them to stay connected with their background. Identity confusion is not pretty.*

OTOH, although chauvinists have a safe and clear identity to feel comfort from, they are inclined to be arrogant and conceited. So although they seem happier because their static identity aligns with their values better, it's not an ideal situation to raise children in either. A belief in innate superiority over the people around you, will create an expectation in life that will lead to continual disappointment and conflict with people around you. Others are not allowed to be doing better than you if you have to be 'better' in your mind, so chauvinists will have a lot of their brainpower diverted towards internal rationalizations for the external discrepancies they see. This becomes obvious once you try having an honest conversation with them. They're often blatantly petty, closedminded and racist.

*In China, stories are disseminated of depressed, suicidal "Hapas", whose parents were often a white-worshiping mother and a racial supremacist father. They are real, but they are not rational. I spoke to one online once, and they basically declared me a racist white supremacist, REGARDLESS of my actions, how I treat my Chinese wife, or how I raise my kids. I told them how pathetic they were, wannabe racial supremacists dealing with being mixed-race, and they soon closed off their blog from outside viewing...
https://longingfordeath.wordpress.com/2017/04/15/why-do-the-alt-right-an...

Anyway, the stories of these turbulent Hapas are promoted by Chinese media, because it serves their don't-date-laowai mantra. It's sad that these unhappy kids are being taken advantage of for sinister purposes. The Chinese media that uses them, neither likes or respects them. They are a freakshow intended to disgust their audience.

Yes, they do.  How many expats who moved to China act like Chinese people?