Short answer
Yes. Disagreement does not remove the obligation to behave with dignity and fairness.
Islamic Guidance
What Islam teaches
Islam commands justice and good conduct. A spouse should not use disagreement as an excuse for insults, humiliation or unjust treatment.
Practical Guidance
What you can consider
Discuss the issue rather than attacking the person. If emotions become overwhelming, pause the discussion and return to it later or involve a suitable mediator.
Sources
Qur'an 4:19; Qur'an 16:90.