- 🇺🇸United States caesius
I came across this and investigated it. It seems the Addtocalendar Javascript updates the tabindex:
https://addtocalendar.com/atc/1.5/atc.min.js
k.tabIndex=1;
I don't know why it does this.
- 🇺🇸United States caesius
To add: The issue with the tabindex=1 is that it modifies keyboard navigation such that the first item you end up tabbing to is the "Add to Calendar" button. This breaks accessibility standards for pages that have it.