July 2018
After the update this months, I notices sometimes the meter won't charge even when it is not bullseye. It is still there for the latest updates.
Here's a screenshot. The meter is empty at start of Plants play, and after 2 Berry Blasts, it is still empty.
I've been hit 6 times without charging in one game, none of them bullseye.
Before
After
July 2018
I have done it twice to opponents. One I still lost and felt it was the right outcome.