TinyMCE tooltips should persist when hovering on them

[afercia]

Related to the changes made for the Gutenberg tooltips in ​https://github.com/WordPress/gutenberg/pull/8033

A tooltip should persist when the mouse pointer is moved hover the tooltip itself. This is a specific WCAG requirement related to the WCAG 2.1 'Content on hover or focus' guideline:
​https://www.w3.org/TR/WCAG21/#content-on-hover-or-focus

Persistent
The additional content remains visible until the hover or focus trigger is removed, the user dismisses it, or its information is no longer valid.

More details on the GitHub issue linked above.

The TinyMCE fix is coming from upstream and should be merged in core for 5.0, see conversation on Slack > #core-tinymce: ​https://wordpress.slack.com/archives/C0UCMQP0F/p1528130639000183

[audrasjb]

5.0.3 is going to be released in a couple of weeks. We are currently sorting the remaining tickets in the milestone. It doesn't appear that ticket can be handled in the next couple of days (still needs a patch). Let's address it in 5.1 which is coming in February. Feel free to change/ask to change the milestone if you think the issue can be quickly resolved.

[pento]

@afercia: Do you know if the fix for this landed in TinyMCE?

[afercia]

@pento unfortunately no. Waiting for a reply for #35710 too.

[pento]

Okie dokie. Is there are ticket on the TinyMCE repo for this?

[afercia]

I don't think so. Better ask the component maintainers though.

[azaozz]

Similarly to #35710 this should be fixed upstream. As TinyMCE 5.0 is out, our best bet would be to make a PR for TinyMCE 4.0.

[pento]

This needs to be reported in the TinyMCE repo, then this ticket can be closed as reported-upstream.