I am using Safari version 16.1 with the HTML-CSS renderer. A displayed formula in the post Convergence by parameter involving inf renders as follows:
This happens even with extensions disabled, but only when I am logged in; if I log out and view the same page, it does not render cut off like this. It also does not happen with other renderers, or in Firefox, even if I am logged in.
@GeraldEdgar points out an MMSE post Integral signs not being rendered correctly describing the same problem, 8 years ago.