Unfortunately while doing a Quick Add Task if you select certain keyboard shortcuts such as Shift-T to add a tag, not only will it NOT allow you to add a tag to the newly created task, but, it tries to add a tag to the underlying task (currently selected task behind the Quick Add Task UI). This is a problem. Expected and desired behavior is for all task creation keyboard shortcuts to be honored within the Quick Add Task procedure itself and not affect any other tasks.
I think I’ve seen this, too. +1 (and I voted up top too 
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