Why is DAE 3D model so broken animation?

DAE 3D models often have broken animations due to software compatibility gaps or rigging/animation setup errors. Collada (DAE) is a universal format, but tools like Blender, Maya, or Unity may interpret animation data (e.g., bone hierarchies, keyframes) differently. Common issues include missing bone weights, misaligned axis orientations, or unselected animation layers during export. To fix this, check export settings (enable "Export Animation," match axis systems) or use a tool-specific plugin to improve compatibility.