We have corrected an issue where Rich Text Format (RTF) styling was missing from the event-standard card. Note if you want to use rich text formatting on your events card, you’ll need to use the function ANSWERS.formatRichText on the details field.
Upgrade Implications:
If you forked static/scss/answers/cards/event-standard.scss, you should refork, or see the PR for changes and copy the changes to your files: Add missing rtf styling in components by yen-tt · Pull Request #1037 · yext/answers-hitchhiker-theme · GitHub.