\mathscr{I} renders incorrectly

Created by: amalikmichael

Issue Summary

\mathscr{I} renders incorrectly. In fact, \mathscr{I} renders the exact same symbol as \mathscr{J}

Steps to Reproduce:

1. Reproducible on official live demo: https://www.mathjax.org/#demo
2. Typing \(\mathscr{IJ}\) renders the same symbol twice

Same issue with \scr{I}. Same bug occurs on my machine.

Technical details:

• MathJax Version: 3
• Client OS: Mac OS X 10.15.7
• Browser: Safari 14.0 as well as Chrome 86.0.4240.75