Navigate to other task within a task IOS FSM

Hi all,

We have a functionality to navigate to a sub-task from the main-task. We created a custom screen with shows the sub-task of the main-task. And use the following code to navigate to the sub-task.
 

var taskId = getCurrentListRowControlValue('task','task_id');
setCurrentKeys("task", "task_id", taskId);
setCurrentWorkflow('Debrief');
goToScreen('DebriefOverview',false);

In Android it works just fine, however in IOS it’s struggelling to go to sub-task. It will “stay” in the main-task. However the task data is from the sub-task. It seems it’s still partly on the main task when navigating to the sub-task. This causing in breaking the client scripts.

Any thoughts?​​​​​​​