According to WAI-ARIA, Tabs should follow some certain guidelines for kbd navigation.
The short version of it is:
When a trigger is focused. arrow keys should switch between the triggers (and optionally automatically trigger them, thus showing the respective content)
Pressing Tab should not go to a different trigger. Instead, it should focus the tab content.
When the tab content is focused, shift+tab should focus the active trigger
According to WAI-ARIA, Tabs should follow some certain guidelines for kbd navigation.
The short version of it is: