The next 1.3.0 release candidate (1.3.0-rc.2) will contain a perf-related change that is likely to

introduce breakages in some applications. The change will affect filters and function call

expressions, and will not call the function if the variables passed to the function are primitive

values and have not changed since the last digest loop.

Example:

//date filter would only be called if the 'timeCreated' property has changed

<span ng-bind="timeCreated|date"></span>

//custom filter would break if depends on data changed by user other than 'cost'

<span ng-bind="cost|i18nLocalizer">