I thought they were quite long suffering with "Briton arrested for not wearing a facemask in Singapore' because he said he didn't believe in them and wouldn't do it. I think he was jailed a couple of weeks and kicked out https://www.dailymail.co.uk/news/article-9864365/Briton-arre...
They can be a bit harsh with asking foreigners to leave if they have a work permit and lose their job. I think you get 30 days to go which is a bit of an upheaval if you are fired.
Singapore's police force and public prosecutor also practise a fair amount of prosecutorial discretion when it comes to charges [2], depending on how people plead their case before it goes to trial.
[1] https://sso.agc.gov.sg/Act/MDA1973?ProvIds=Sc2-#Sc2-
[2] https://singaporelegaladvice.com/law-articles/prosecutorial-...