AngularJS 1.8: Strange behavior when using $timeout inside a nested directive
I'm writing unit tests and I just started working with I'm upgrading from an older version and I'm relatively new to this, so bear with me. I'm working with an scenario with AngularJS 1.8 where using `$timeout` inside a nested directive leads to unexpected behavior. In my application, I have a parent directive that contains a child directive. The parent directive initializes data that the child directive depends on. However, when I try to use `$timeout` in the child directive to delay some UI updates, the child does not seem to reflect the changes correctly, and I end up with stale data in my UI. Here’s a simplified version of my code: ```javascript app.directive('parentDirective', function() { return { restrict: 'E', template: '<div><child-directive></child-directive></div>', controller: function($scope) { $scope.data = 'Initial Data'; // Simulating data update after some operation setTimeout(() => { $scope.data = 'Updated Data'; $scope.$apply(); }, 1000); } }; }); app.directive('childDirective', function($timeout) { return { restrict: 'E', scope: true, link: function(scope, element) { $timeout(function() { element.text(scope.data); // This seems to show stale data }, 2000); } }; }); ``` In the above code, the child directive is supposed to show updated data, but it shows 'Initial Data' instead of 'Updated Data'. I tried wrapping the `$timeout` in the child directive with `$scope.$apply()` but that didn't resolve the scenario. The behavior I see in the console is: `behavior: [$rootScope:inprog] $apply already in progress`. This indicates that the digest cycle is already happening, but I need to figure out how to synchronize the updates correctly. Can anyone guide to understand why this is happening and how to properly update the child directive with the new data? Is there a better way to handle this kind of data flow between nested directives? I'm working on a web app that needs to handle this. What am I doing wrong? Could someone point me to the right documentation? The project is a desktop app built with Javascript. Thanks for your help in advance! This issue appeared after updating to Javascript 3.11. I appreciate any insights!