Edge Alarm Notification Email Custom Message Issue

The default text in Ignition Edge for an alarm email notification is like this:

At 10:59:11, alarm "Digital Alarm" at "Yard14/Acrylate/XA-P-14352-COM" transitioned to Active.

It seems like the message is hard-coded in Edge as:

'At {eventTime|hh:mm:ss}, alarm "{name}" at "{displayPath}" transitioned to {eventState}.'

I tried to change the text using the Custom Message property under Email Notification Properties to this:

'At {eventTime|hh:mm:ss}, alarm "{label}" transitioned to {eventState}. Priority={priority}. Alarm Path="{displayPath}"'

I get the expected result if the alarm is triggered by itself:

At 11:12:52:, alarm "P-14352 Modbus Comm Fault (XA-P-14352-COM)" transitioned to Active. Priority=Medium. Alarm Path="Yard14/Acrylate/XA-P-14352-COM"

However, if two or more alarms trigger in a short period of time, the email then shows like this, back to the default message and doesn't observe the Custom Message property:

Alarm "Digital Alarm" at "Yard14/Acrylate/XA-P-14356-COM" transitioned to Active at 11:12:14
Alarm "Digital Alarm" at "Yard14/Acrylate/XA-P-14352-COM" transitioned to Active at 11:12:15

Seeing that the {eventTime} is now at the end of the string, it seems like a different hard-coded string is being used for multiple grouped messages. Is this a bug or a feature?
Is there any way other than scripting the notification emails myself (if this is even possible with the limitations of Edge using a tag event script or similar) to have the Custom Message property also apply to email notifications with more than one alarm?
The reason I am trying to change the email string is that the customer finds the {label} more informational and descriptive than the {displayPath} and non-dynamic {name}.

Thanks in advance to the folks at ignition and the other contributors, the forums are filled with so much helpful and detailed information, couldn't find anything on this one though.

Bumping thread because I am also having this issue.