p-calendar is not supported keyboard accessibility.

[ssranjith]

When p-calendar get opened i cannot traverse using keyboard. Because all elements like anchor and button have tabindex="-1". I do not know why they are setting up tabindex="-1" for all accessible elements.

[cagataycivici]

See;

#4695

Use tab and arrow keys go inside the panel, this is implemented according to the section 508 standards.