Two "v-for" template renders unexpected output

[blahgeek]

Version

2.5.0

Reproduction link

https://jsfiddle.net/s2eskL26/

Steps to reproduce

See the jsfiddle link.

What is expected?

Renders empty output.

What is actually happening?

Renders "undefined undefined"

[Leopoldthecoder]

I'm having a similar issue here: https://jsfiddle.net/wswmmjaa/1/ . If we have one <template> tag, it also renders undefined.

[skollro]

please tag this soon 👍