rich text editor keyboard trap

[thiessenp-cds]

In the form-builder with a Page Text element when a keyboard user tabs into the rich-text editor the user is "trapped". See WCAG 2.1.2 No Keyboard Trap (Level A). Tabbing or shift-tabbing will not allow them to exit the editor. Keying tab adds a tab indent in the editor. Keying ALT+TAB will tab the user out of the editor but this is not clear.

Some more background: the Tab is needed inside the editor to allow indentation and creating nested lists

This issue could be solved in a number of ways:

• re-bind the TAB key back to the browser default to allow natural tabbing in and out of the rich-text
• add a legend menu with the custom keys ALT+TAB and ALT+SHIFT+TAB
• add a new key that exist the editor e.g. ESC and add a legend etc.

[thiessenp-cds]

The current solution re-binds the TAB key but I think a product decision is needed for which solution or a different solution not mentioned. @Abi-Nada @srtalbot

[anikbrazeau]

FYI relevant parallel work happening on Notify: cds-snc/notification-admin#2282