Wait, it is confirmed on 0.11.1, why it isn't in the affected versions? And please fix this on 0.11.2, because I am annoyed of this bug. (You got me first than I will post this bug)
Sorry if I posted this here. Is there a way that I can edit the post so I can add my MC version affected with that bug or I will just needed to comment "Confirmed for ..*" and a mod will rescue and put it into the "Affects Versions" tab in the post?
The comparator keeps ON (except when connected to a clock, you don't need to worry) when you don't reset the command block. I add a setblock command block in the end to set the command block with same command but is resetted so I can do the command again and again without resetting it.
Confirmed for 1.8.3
Update: Destroying any 2-block flower or plant does the same.
This happened to me in v.0.11.1 when I entered 2 § consecutively. It is blank, no colored lines you can see to mark where the digit typed will be placed.