Add Wall of Browser Bugs entries for <dialog>

[cvrebert]

I propose adding these on the grounds that <dialog> would make it much easier and less hacky to implement modals. In particular, accomplishing the "disablement" of the underlying page, so that the modal is actually modal, is currently pretty painful.

Refs:

• https://bugzil.la/840640
• https://webkit.org/b/84635
• http://caniuse.com/#feat=dialog
• https://html.spec.whatwg.org/multipage/forms.html#the-dialog-element

CC: @twbs/team for review

[patrickhlauke]

but as bootstrap currently doesn't use <dialog>, it's not really a bug that affects us? (except for providing a reason why we're not using it, perhaps)

[cvrebert]

Yes, it's a feature request rather than a bug per se. The reasoning is similar to #20143. <dialog> would make Bootstrap better and make our lives as maintainers easier, but lack of browser support currently prevents us from using it.

[hnrch02]

Maybe then we need to rename it? The thought crossed my mind before with #20143.

[cvrebert]

Would breaking out the feature requests into a "Most Wanted Features" section satisfy you?

[patrickhlauke]

that'd work for me (or a "Why don't you folks use..." section ;) )

[hnrch02]

Sure, sounds good to me.

[cvrebert]

@hnrch02 @patrickhlauke Updated. Does the copy read okay to you?

[patrickhlauke]

LGTM

[hnrch02]

Late 👍 from me.

[RehanSaeed]

How about using something like dialog-polyfill to add support instead of Bootstrap shipping it's own implementation? There doesn't seem to be an issue for this, should I raise one?

[sassquad]

As of January 2020, support for the dialog element has expanded somewhat. Microsoft Edge has been superceded by Microsoft Edge (Chromium), while Firefox has an implementation hidden behind a config flag (although I think this was the case even 2 years ago).

• Microsoft Edge support
• caniuse.com status of element support

The links within the Most Wanted features that refer to the element will need some updating, since the EdgeHTML links now no longer work, presumably reflecting the deprecated status of the 'old' Edge.

[XhmikosR]

We no longer have the Wall of Bugs page for v5 because it was basically unmaintained. You are welcome to make a PR targeting the v4-dev branch