Do You Need Immediate Help?

No

Is This A Feature Request?

No

What Version Of Caldera Forms, WordPress and PHP Are You Using?

1.5.7 / WordPress 4.8.3

Does Your Issue Persist When You Disable All Other Plugins and Switch To The Default Theme?

Yes

What Is The Unexpected Behaviour?

Calculation fields are always 0 if a summary field is added to the form

What PHP Errors Have You Logged While Reproducing This Bug?

None

What JavaScript Errors Have You Seen While Reproducing This Bug?

None