WhatsApp Issue with the Latest n8n Update

Issue: After updating to the latest version of n8n, the WhatsApp integration is not functioning correctly. The problem affects phone number formatting and message delivery.
:mag: Observed Behavior: 1. Phone Number Formatting Issue: β€’ In previous versions, phone numbers like +31688888188 and +31619971032 were correctly recognized. β€’ After the update, the workflow fails to detect or replace phone numbers correctly in formatted messages. β€’ Possible Cause: The update may have changed how Regex or text processing works inside n8n. 2. Message Delivery Problems: β€’ WhatsApp messages generated inside n8n are not being processed as expected. β€’ Some messages fail to format correctly (e.g., links or rich text not displaying properly). β€’ The WhatsApp node may not be encoding messages correctly before sending. :warning: Impact: β€’ Workflows using WhatsApp messaging no longer function correctly. β€’ Businesses relying on WhatsApp for automated responses or confirmations may experience failures. β€’ Users have to manually correct messages before sending. :mag_right: Possible Causes: β€’ Changes in n8n’s text processing engine. β€’ Updates to the WhatsApp API handling within n8n. β€’ Issues with new dependency versions (e.g., WhatsApp libraries). :hammer_and_wrench: Suggested Fixes: β€’ Rollback n8n to an earlier working version as a temporary fix. β€’ Check changelogs for updates that might have modified text processing. β€’ Verify WhatsApp API changes that could affect message formatting. β€’ Re-test regex conditions in workflows to ensure proper detection. :pushpin: Steps to Reproduce the Issue: 1. Upgrade to the latest n8n version. 2. Run a workflow that formats a WhatsApp message (e.g., inserting phone numbers). 3. Observe that phone numbers are not replaced correctly or messages fail to send properly.

Might be related to

@Cislink_NL can you specify what n8n version you are running, and whether you are self-hosting or using cloud?

The version that I am currently running to get the whatsapp node working for accepting the dynamic params is the version 1.81.4


This case is is indeed the same as mentioned in the topic

@Cislink_NL

consider clicking the β€˜solution’ button under my reply :slight_smile:

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