sender_email can't be set as $profilerequest:sender_email$YourEmail@example.com$

• Error
• Community projects
• Dogfood on a *.tiki.org site
• Conflict of two features (each works well independently)

This profile https://profiles.tiki.org/Bug_Tracker_15 makes an attempt to allow the user to set the sender_email if they haven't done so yet (which is usually the case when we are creating new show.t.o instances, or reproducing some scenario in localhost to debug some feature, etc.)

I'm using the same type of syntax which seems to be working in other profiles:
But this one in Bug_Tracker_15 profile seems not to work:

sender_email: $profilerequest:sender_email$YourEmail@example.com$

while these other ones, in Easy GeoBlog, for instance, work as expected:

style: $profilerequest:style$gradiant.css$
 sitetitle: $profilerequest:sitetitle$My Easy GeoBlog$
 sitesubtitle: $profilerequest:sitesubtitle$My thoughts and musings$
 browsertitle: $profilerequest:browsertitle$Easy GeoBlog$

I tried if the issue was adding an "@" character in the working fields of Easy Geoblog, but that worked as expected also even if an email was written there.

This bug has been demonstrated on show2.tiki.org

Please demonstrate your bug on show2.tiki.org