Description

there is an error when you try to edit a layer with LineString (Linea_costa)

In case of Bug (otherwise remove this paragraph)

Browser Affected
(use this site: https://www.whatsmybrowser.org/ for non expert users)

• Internet Explorer
• Chrome 65.0.3325.162
• Firefox 59
• Safari

Browser Version Affected

• Indicate the browser version in which the issue has been found

Steps to reproduce

• open a map
• login as admin
• load Linea_costa
• open the feature grid
• add new feature
• start drawing

Expected Result
you can draw a line

Current Result
you cant

Other useful information (optional):