Gitbook - User icon keeps expanding and hides the 'Edit/Merge' button

Question

I have gitbook synchronizing with my github account for my personal wiki. Lately, the user icon keeps expanding where it now hides my 'Edit/Merge' button.

Gitbook top section

When I mouse over these icons, it's says " (You)".

Does anyone know how I can clear this?

Thank you.

I'm not sure what these icons represent.