Fix a red bounding box that shows overlap after snapping

Understand why a red bounding box can appear even when units snap correctly.

1. The red bounding box indicates that the units are overlapping, so it may appear even though the snap itself succeeded.

   ✓ 16 அக்டோபர், 2026 அன்று தயாரிப்பில் சரிபார்க்கப்பட்டது