The Calendar portlet table cells are not programmatically associated with table headers. For complex tables, accessibility best practices recommend programmatically associating table cells with headers so that screen readers can speak the headers associated with each data cell and so that the cell-header relationships are perceivable when the presentation format changes.
1. Navigation to Liferay page containing Calendar portlet
2. Using browser developer tools, inspect the mini-calendar or scheduler Day/Week/Month table td cell elements
Expected: Table cells are programmatically associated with headers.
Result: Table cells are visually aligned with headers, but not programmatically associated.