[solved] Display Legendre bracket problem

[CC0_Knight]

I want display Legendre bracket same size,but bracke size not same.how can i make it same?
pic related:

Solution by @mgubi

1. move cursor near the cursor
2. open focus menu in toolbar
3. then increase size | decrease size | default size will appear (pic below)
   
   

[mgubi]

You can manually control the size of the brackets (I guess this is the simplest approach even if not the most satisfactory). While in a bracket, go into the Focus menu and you will see menu items to change the size.