input: ng-messages animation errors

[ThomasBurleson]

Visible with ng 1.5.x and 1.6.x

[EladBezalel]

Also happens on 1.5.5 - repro on 1.6.2 aswell

@topherfangio as the one who wrote this code, do you know what's going on?

[rw-bkew]

I am also seeing this in 1.1.3

[mckenzielong]

I've also seen the opposite where input errors can stick, however I am having trouble duplicating in a codepen. Here is a tiny code pen for demonstrating something similar to what @ThomasBurleson is showing:

https://codepen.io/mckenzielong/pen/qmZVyo

1. Show field
2. enter an invalid number (say 500)
3. click submit
4. hide field and reshow

[tamsler]

We are seeing this issue as well:
using:
Angular Material v1.1.4
Angular v1.6.4