Amphtml: Invalid AMP validation for amp-lightbox

[akshaylive]

Recently, a new "scrollable" tag was added to amp lightbox ( https://github.com/ampproject/amphtml/pull/6398 ).

This is the latest "everything AMP" example
https://raw.githubusercontent.com/muxin/amphtml/361ec9e264b5bb7e8045c4677ceaf71fc714cc45/examples/everything.amp.html

However the validator considers it to be an invalid AMP. https://validator.ampproject.org/#url=https%3A%2F%2Fraw.githubusercontent.com%2Fmuxin%2Famphtml%2F361ec9e264b5bb7e8045c4677ceaf71fc714cc45%2Fexamples%2Feverything.amp.html

Specifically,

The attribute 'scrollable' may not appear in tag 'amp-lightbox'.

The AMP lightbox CDN version has the new code changes made in the PR, but it appears that the validator is not updated.

[Gregable]

It typically takes a few weeks for validator changes to roll out, with the holidays it's a big longer. I'll try to update this issue when it's live.

[ebbeck]

Has a date been set for this to roll out? Seems like there was a release last Thursday but this is still causing our AMP pages to be invalid.

[Gregable]

I anticipate releasing late this week, but cannot guarantee that of course.

[honeybadgerdontcare]

This is now live in prod.

[johnfisherman]

Hey guys, just a quick heads up to remind you this attribute is not yet included in the official documentation, online.

I needed this and had to google my way to the PR.

[aghassemi]

@johnfisherman Thanks, will update the docs soon.