Jane Rosenberg/Reuters
- Tempers flared Thursday during a heated sidebar discussion at Trump's fraud trial in New York.
- Lawyers for both sides could be heard insulting each other in raised voices.
- Insider has uncovered what caused the off-the-record uproar.
Attorney tempers flared Thursday at the Trump civil fraud trial in New York, where a quiet sidebar discussion erupted into cross-accusations of rudeness and disrespectfulness.