Can’t click on reaction when size set to 30 or less

The default reaction button size 64 is too big.
However, when I change the reaction button size to 30 or less.
The white circle around the count number cover the whole reaction button.
When mouse cursor over the white circle, the cursor change to “?” and you can’t click on the reaction button.
Since the white circle is too big and covering whole reaction button, users has no way to click on the reaction, when the button size set to 30 or less.

1, How to reduce the size of the white circle around the count number?
2, How to reduce the fonts size of the count number?
3, How to reposition the white circle to make further apart without covering the reaction button.
4, What is the purpose of showing cursor with “?” when mouse-over the count number ?
5, How to disable the cursor “?” when mouse-over the count number ?
6, How to make the reaction button clickable by clicking the count number?