I am using angular 1.3.16, in Google Chrome.
I found a wrong behavior of $locationChangeSuccess event.

To reproduce:

• open a page like "path/#"
• click to a link to go to a page like "path/#arg=123"
• click to a link to go to a page like "path/#arg=555"
• now, click to "Back" button of browser. You will go to "path/#arg=123"; $locationChangeSuccess event is fires.
• click another time to "Back" button of browser. You will go to "path/#"; sometimes, $locationChangeSuccess event is NOT fired ($locationChangeStart is fired).
• click to "foreward" button of browser. You will go to "path/#arg=123"; $locationChangeSuccess is fired.
• click to "back" button of browser. You will go to "path/#"; $locationChangeSuccess is NOT fired.

I found in "angular.js" source code that there is a comparison between $location.absUrl() and newUrl local variable. $location.absUrl() returns "path/", and newUrl returns "path/#".
Row 11486: if ($location.absUrl() !== newUrl) return;

This comparison is made after "$locationChangeStart" and before "$locationChangeSuccess". The comparison do exit by function.

The $succes