Digital Channel Capacity Ignored During WFM Publish

Why does this setting in the WFM schedule publish payload fail to cap digital agents when the shift is active? The max_concurrent_interactions field is clearly defined, yet agents remain available for new chats in Genesys Cloud 2024-2.0.

{
 "userId": "user-123",
 "shiftId": "shift-456",
 "schedule": {
 "startTime": "2023-10-27T08:00:00-05:00",
 "endTime": "2023-10-27T16:00:00-05:00",
 "channels": {
 "chat": {
 "max_concurrent_interactions": 2,
 "skill": "support-general"
 }
 }
 }
}