Inconsistent behaviour of $watchGroup

[smashercosmo]

Sometimes $watchGroup and $watchCollection produce different results. Here is plunker, that reproduces this issue. Look at third item in results list and you'll see the difference between $watchGroup and $watchCollection output. May be it is by design, but it looks rather strange to me.

[btford]

Is this actually problematic for you?

Please read the contributing guidelines; these types of questions are ill-suited for GitHub. Thanks!

[smashercosmo]

@btford Sorry, but could you please explain, what am I doing wrong?) I am looking at documentation on $watchGroup and see the following "the oldValues array contains the previous values of the watchExpressions", but my plunker shows that it is not so in some situations. I consider it a bug. I updated pluker to be more descriptive. As you see the second expression in oldValues array is always "undefined", but should be "1". If it's working as expected then it should be somehow mentioned in documentation. P.S. Sorry, if I get something wrong.

[caitp]

@rodyhaddad could you assign a milestone for this?