I like the easy readability of a task name with a prepended emoji, so I’ve been trying out the use of a Rule to do so. Mostly, this works well. However, I have found that there are certain views where the prepending is slow, or in the case of calendar, where it never works.
Here is my preferred Rule:
and a similar Rule using only text:
I tried various scenarios, going to List, Board, Project Calendar, and My Tasks locations to add a Task to the Project in question. Here are the results:
So, in no case was I EVER able to see the Rule having effect when a Task was added in the Project Calendar.
For other views where I tried adding Tasks, I often needed to wait several seconds, up to 5 seconds, to see the prepending. If I completed typing the Task name and exiting the new Task before prepending, it did not occur and never occurred. (Makes sense, as the time of “When a Task is added…” is terminated at the time editing is exited.)
NOTE: I’m complaining about a certain type of Rule running too slowly. A previous issue was raised on Rules running too fast, see: "When task added" rule running before I've finished typing in Board view
Also, a Rule with a different “Do this” instruction, such as “Add subtask”, DOES run correctly even when a Task is added in Project Calendar view. It seems that the issue I’m seeing is based on the time uncertainties and lags resuting from a Rule and human editing interacting.
I doubt if this would ever be fixed, I’m just documenting it for the sake of others.


