The buttons are currently displaying with a large space on the right:
This was previously happening due to a right margin, which was corrected in T266881. However, the problem has started happening again, this time due to a large minimum width on the button element. Presumably something has changed in the OOUI styles.
It is fixed by adding min-width: 20px; to the button element in ipinfo.less.
The heights also need fixing: