Topic Shape Icon desappeared

firstable have a great day.

my question is:

Why i can not find topic shape icon inside the customize window i f a want to relocate in a different tab?

i mean when i am customizing the ribbon tabs i can not see the topic shape icon. But if i select the entire section "object format", the final result is that i can see it in the ribbon, but i want it only that option in a differente section. I am thinking that there is a bug or am i wrong?

thanks in advance for your support