When the phone screen faced down placed on the desk or any surface, I did long press and hold the essential key when the animation is going on and when the recording is about to start i released the key by accident. Then, the animation gets stuck in that matrix and never turns off even i turned off in quick settings still it didn’t get turned off. i even pressed the button down the matrix still it didn’t change to next tiles. I had to restart the phone to make that matrix turn off!!
Feel free to reply if you faced similar issue!