jmerle
commented
2 weeks ago I can reproduce this issue in Firefox but not in Chrome, so I assume you're using Firefox. The cause of the issue is a known Firefox bug (https://bugzilla.mozilla.org/show_bug.cgi?id=1757836), which is prioritized to be fixed in Firefox's next release cycle or the following (although it's had that priority for the past 2+ years, so I don't think the documentation on Firefox bug priorities is correct).
boasbakker
When trying to parse https://onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=21&page=show_problem&problem=1852 I get this error: Something went wrong while running Competitive Companion's UVaOnlineJudgeProblemParser. Open the browser console to see the error. Please open an issue at https://github.com/jmerle/competitive-companion/issues if you think this is a bug (make sure to include a link to this page).