Mobile Push Notification not triggering when using "Additional comments changes" condition

[RaasheedRaS]

Hi All,

I am currently working on a story to implement mobile push notifications for P1/P2 Incidents.

Requirements
Table: Incident

Send When:

-Additional comments changes
-Priority is P1 or P2
-Any insert or update
-Updated by is not the same as Caller or Opened By
Recipients:

Global MIM group members 
Service Offering subscribers
Message:

Major Incident : Your incident <number> has been created/updated.

Current Implementation
I have:

Created the Push Notification and Push Message Content.
Created a custom Event.
Created an After Business Rule to trigger the Event.
Implemented recipient determination using Service Offering subscribers and Global MIM members.
Verified that the Event is generated and processed successfully.
Issue
When I keep the "Additional comments changes" condition as part of the trigger logic, the mobile push notification is not received.

However, if I remove the Additional comments changes condition and test with the other conditions (P1/P2, insert/update, updated by validations), the mobile push notification is received successfully in the Now Mobile app, usually after a delay of 1-2 minutes.

Questions
-Has anyone experienced issues with using current.comments.changes() or "Additional comments changes" as a trigger condition for mobile push notifications?
--Is there a recommended approach for handling Incident creation and Additional Comments updates in the same Business Rule/Event-driven notification design?
Are there any known limitations or best practices related to mobile push notifications when triggering on journal fields such as Additional Comments?

Any suggestions or guidance would be greatly appreciated.

Thanks in advance!