Do you know what the immigration hates most? False information. Lies. We all know you have some information that you don’t want to tell us or immigration, such as minor traffic penalty, working while you are with temporary visit visa.
However, you should tell everything to the immigration if you want the visa. Tell everything and also explain why you should have done that. You might think, “how come they know the working during my stay?”. They know it.
Do not underestimate the Immigration.