This question already has an answer here:
In some cases, I have edited the title and tags of some questions and then answered.
A while ago, I revisited some of those questions and it felt awkward to see that I posted an answer and also edited the question (because a user can theoretically re-write a question completely), so I stopped editing questions that I'd answer.
Recently, I have found unanswered questions that I can answer, and sometimes those questions have incorrect tags, tags in titles and other details that I could fix as well.
Instead of struggling with myself to choose if I should or shouldn't do this I ask here.
Is it OK to edit a question you're posting an answer to? If it is, is there anything I should bear in mind to prevent any possible misunderstanding?