Tags suggestions: consider to don't save new tags when tabbing away from the input field

[afercia]

Currently, new tags get added when tabbing away from the Tags field in the sidebar. This is not necessarily what users want, as tabbing away from a form field is the standard way to navigate content for users that use the keyboard.

To reproduce:

• focus the Tags input field in the sidebar
• type some non-existing tag name
• press the Tab key to navigate away from the input field
• at this point, the new tag gets saved
• check in the Posts > Tags admin screen the new tag is listed

The current behavior in core is different: tags and new tags get added just when explicitly saving (there's a button for this reason). When tabbing away, the only things that happen is wp.a11y.speak sends an audible message to the aria-live regions.

[afercia]

Worth noting, when using a keyboard there's the concrete risk to create tons of new, unwanted, tags.

[youknowriad]

We're already aware of this, some context here #970 (comment)

The current REST API is not very handy for this use-case.

[afercia]

Relevant core ticket: https://core.trac.wordpress.org/ticket/42234
worth noting that change broke the normal interaction when pressing Enter and a better solution should be investigated.

[jeffpaul]

This ticket was mentioned in Slack in #core-editor by jeffpaul. View the logs.

[karmatosed]

I think design feedback for this is that whatever core does on this we should for tags. It's at least a solid starting point to have same behaviour.

[danielbachhuber]

@afercia Was this fixed by #6622 and can be closed?

[afercia]

@danielbachhuber yes.