The issue you're facing—where the sorting only works on the first click but not on subsequent clicks—is because of this line:

const sorted = tasks[category].sort((a, b) => {
  return new Date(a.date) - new Date(b.date);
});

❗ Problem

You're mutating the original tasks[category] array directly by using .sort() (which sorts in place). So after the first click, the array is already sorted, and clicking again doesn't create a new change—React doesn't re-render unless state changes.

✅ Solution

Make a copy of the array before sorting to prevent in-place mutation:

function handleSorting() {
  const sorted = [...tasks[category]].sort((a, b) => {
    return new Date(a.date) - new Date(b.date);
  });
  setSortedTasks(sorted);
}

Or using structuredClone if deep copy is needed (not here, though):

const sorted = structuredClone(tasks[category]).sort(...);

This way, sortedTasks will be a fresh array every time, and the component will re-render correctly.

Would you like a version where clicking toggles between ascending and descending sort?

Thanks for the update. The issue is still not solved because you're not making a deep copy of the task array.

❌ Problem:

This line:

const clonseTasks = { ...tasks };

does not clone the inner array (tasks[category]), so .sort() is still mutating the original array in tasks.

✅ Real Solution:

You must clone the array itself, like this:

function handleSorting() {
  const sorted = [...tasks[category]].sort((a, b) => {
    return new Date(a.date) - new Date(b.date);
  });
  setSortedTasks(sorted);
}

You don't need to clone the full tasks object. You just need to clone the specific array before sorting.

✅ Also Fix the setSortingToggle Order

React state updates are async. You should handle sorting after the new state value is decided. So:

onClick={() => {
  const nextToggle = !sortingToogle;
  setSortingToogle(nextToggle);
 
  if (nextToggle) {
    handleSorting(); // Sort only when toggle is turned ON
  }
}}

🛠 Final Fix (Use This Version):

function handleSorting() {
  const sorted = [...tasks[category]].sort((a, b) => {
    return new Date(a.date) - new Date(b.date);
  });
  setSortedTasks(sorted);
}
 
onClick={() => {
  const nextToggle = !sortingToogle;
  setSortingToogle(nextToggle);
  if (nextToggle) {
    handleSorting();
  }
}};

Let me know if you'd like to implement a toggle between ascending and descending as well.