[WEBJS] - Message sent successfully but no ack received for some numbers.

[normalscene]

Describe the bug

I have been using WAHA for quite some time now. But since dec 13-14, I have seen a strange behaviour. The API is able to successfully send the message but I only see message create event and no ack. This happens for numbers which I have not contacted for quite some time and I do not see any message request going out on that number on my phone. Basically on the API front, it shows message sent but on the phone - no activity.

If I have made contact with the number recently then messages goes out and is delivered and is also seen on my phone whastapp (as expected).

Version

Get the WAHA version by calling GET /api/version

{
  "version": "2025.9.2",
  "engine": "WEBJS",
  "tier": "PLUS"
}

Expected behavior

Expected behaviour is that when a message create event happens, an ack for the same event also follows.

Question: Is there any new whatsapp policy in effect? Is anyone else also experiencing the same issue ?

[fastrac-dev]

We are seeing something similar too... any fixes?