Min Attribute Not Working on Custom Property Drawer

Here's my data structure. The range attribute works, but not the min attribute.

 [System.Serializable]
 public struct CreatureTableEntry {
     public Creature creature;
     [Min(1)]
     public int level;
     [Range(0, 1)]
     public float probability;
 }

If it is helpful, here is my property drawer file

 [CustomPropertyDrawer(typeof(CreatureTableEntry))]
 public class CreatureTableEntryDrawer : PropertyDrawer {
 
     public override void OnGUI(Rect position, SerializedProperty property, GUIContent label) {
         Rect creatureRect = new Rect(position.x, position.y, 150, position.height);
         Rect levelRect = new Rect(position.x + 155, position.y, 45, position.height);
         Rect probabilityRect = new Rect(position.x + 205, position.y, 65, position.height);
         EditorGUI.PropertyField(creatureRect, property.FindPropertyRelative("creature"), GUIContent.none);
         EditorGUI.PropertyField(levelRect, property.FindPropertyRelative("level"), GUIContent.none);
         EditorGUI.PropertyField(probabilityRect, property.FindPropertyRelative("probability"), GUIContent.none);
     }
 }