Yes, you have to remember to basic general rules:

Most countries require that you enter on the passport of that country (when you are a citizen). There may be penalties for not doing so.

Secondly, the US will not provide assistance or pressure regarding a country where a dual citizen is a national.

i.e. Tunisian/American dual-national goes to Tunis and enters the country on their US passport. The Tunisian authorities notice that this person is a national and arrest them for immigration violation and subsequently find out that the person is also wanted for aiding in hiding Tunisian government funds for the ex-President's wife. Don't bother ringing the US Embassy for help.

Nothing against Tunisia, it is just that I was there last week and needed to use a country in my example.

In countries where Military service is/was mandatory, this is also a classic where a returning national thought that entering with their US passport wouldd keep them from being thrown in jail for avoiding military service and they are very surprised when they ring the US Embassy from jail and find out they are on their own.