Hello,
I won’t be able to capture it with a screencast but I can tell you how to replicate the issue.
Create a webhook within the Woocommerce advanced tab. Set the webhook topic to “order updated”. If you have an automation service that you use you will need to link the Delivery URL to that. Examples are Zapier or Intergromat/Make, etc. Enter the api secret key and set the api version to v3.
Have the automation set up for order completed. An easy module to configure would be a gmail module. Anything that’s easy to setup where you can see that the webook event has been triggered. The gmail module would send you guys an email when it’s triggered.
Once everything is setup try using the email customizer and you’ll see that it triggers the webhook to fire, which it shouldn’t. For example if you set up the gmail module like I suggested you’ll start receiving multiple emails because the webhook is being constantly triggered.
As a reminder this is what I found tiggers it:
Settings > general > save button triggers the “order updated” webhook. The same thing also happens when I send a test email. This involves any previous completed order I choose in the dropdown menu within the email customizer.