Additional shift+enter after each numeric-style reference

OS: El Capitan Public Beta 1
Office Version: Office 2016

In the picture i use the citation style: "Elsevier Vancouver (Engineering Structures)". Normally there is no shift+enter after each reference. In previous version of Zotero the shift+enter also did not appear. Please help us find this out. Your warm-hearted help is sincerely appreciated.

http://i3.tietuku.com/d506da53fe0c5ac9.png

This is another example in which i use the citation style "American Society of Civil Engineers". As you can see, in this style, the shift+enter does not appear. So i think it is a style-specific issue.

http://i3.tietuku.com/a2039df55ae61a24.png

As far as i can explore, this issue only occurs in "numeric" styles, while the "author-date" styles don't have this issue.

Thank you @Simon and @Adamsmith
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