Thanks for the suggestion here. While notifying task creators when a task is completed a great idea, it's not currently on our roadmap for the next couple of quarters. For that reason, I am switching the status of this idea to Not Currently Planned.
We'll re-evaluate this idea in the coming quarters and update the status accordingly if anything changes.
Strongly agree with this. Tagging each other when a task is completed is quite manual. An automated process where completed tasks send notifications to the person creating the tasks would be a huge help.
We work around this huge design flaw by assigning the tasks back and forth then commenting "done" and tagging the people who assigned the task originally. It's a mess and a waste of time but it works.
This is definitely a feature the system needs. When you assign a task, it would be great to see it's ticked off, there's no time to check in most days.