font changed on email notifications?

[Susan Clark]

On my email notifications for Jira tickets that I'm a Watcher on, the font has changed to "apple-system".  Why has this changed?

[Angélica Luz]

Hello Susan,

Welcome to Atlassian Community!

The notification for watchers is from the system and this type of notification has no option to change the font type, size, or any other type of customization. 

Is this happening to other users?

When did this issue start?

Is this happening only with the emails from Jira?

Regards,
Angélica