Feedback has numerous advantages and is conductive to L2 writing teaching and learning. However, although feedback is believed to benefit ESL students and enhance their writing achievements, there are critiques that feedback has various problems and does not seem so effective. This paper examines three major problems existing in feedback in L2 writing: problems of feedback environments (i.e., cultural problems and interactional problems), problems of teachers' feedback, and problems of students' reactions to the feedback. The paper proposes the negotiations between teachers and students, teachers' awareness of contrastive rhetorics principles, and the improvement in the teachers' culturally responsive pedagogical skills, to better understand students' cultures and writing norms, to tackle global errors over local errors, to empower students to project their authentic voices, and to ensure that the teacher feedback is not in vain.