[2.0.0-alpha] A bug with inline templates

[acasar]

Vue.js version

2.0.0.-alpha

Reproduction Link

https://jsfiddle.net/bd1wfuht/

Steps to reproduce

Click toggle

What is Expected?

"true" should be displayed in bold

What is actually happening?

Uncaught TypeError: Cannot read property '0' of null.

Note: If you remove <strong> element, it all works correctly. So there is a problem with nested nodes inside v-if in inline templates.

[simplesmiler]

Looks like the problem is with v-else: https://jsfiddle.net/simplesmiler/bd1wfuht/3/

[simplesmiler]

Should be fixed with #3063
Feel free to reopen if the issue will persist in the next alpha release.