I searched for this issue not on this site, but the whole net, and I couldn't find anything.
After dictating something on a text field the microphone keeps active, and nothing but a phone call or a device restart will stop it. You can check this by dictating something, and setting a very high or low volume, then make a phone call, you can dial your number. Now check the volume, it will be different. Also, this causes battery to drain faster.
Anyone noticed this? Or am I becoming crazy.