Drupal webform submission problem: if "city" is empty, appears [webform_submission:node:city:clear] in Email

Problem:

I have a node, and webform as reference and email handler for submissions. 

One of the field "city" is not required and is sometimes empty. If city is empty I see this text instead of nothing. 

[webform_submission:node:city:value]

 

A temp solution:

[webform_submission:node:city:clear]

 

Is there a better solution?

 

 

Drupal
Webform

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