Using template engine syntax that contains a comma " , " in the To, CC or BCC line of your Notification Email Group results in the template syntax being split across two lines when you go to update that Notification Email Group.
For example, you enter a single line of code before saving the Notification Email Group which will work as anticipated
When you go to Update this group you will see that the code is split across two lines
We have disallowed the use of commas " , " in the To, CC or BCC fields of the Notification Email Group which has the side affect of limiting the options for templating to filters that do not have commas " , ".
2018.1.0 and above
Workaround or Solution
When you update the Notification Email Group you will have to copy the multiple lines of text out of the appropriate fields, delete the line and recreate the single line of template syntax.
SovLabs Template Engine : http://docs.sovlabs.com/latest/vRA/7.6/framework/sovlabs-template-engine/basics/intro/
SovLabs Notifications : http://docs.sovlabs.com/latest/vRA/7.6/modules/platform-extensions/notifications/