Tasks, Icons and tabs

Realized some inconsistency in the "/icon" task parameter.
When it was created, the idea was to set the icon in the ConEmu window TITLE BAR. In other words, when you run ConEmu with exact Task on its startup (any shell, long running script, and so on) uses has an option to change the icon, which will be visible on task bar and in the ConEmu title bar.
Now, the problem. If you have already started ConEmu and you run that task, ConEmu title bar icon will be changed. And never will be changed back.
What do you think? Need to ignore "/icon" switch in the task parameters when it is running in the existing ConEmu instance?