Non-WP Blog Embeds are being cropped.

[mdwolinski]

When adding an embed for a non-WP blog post, for example, a NY Times story, the enclosing iFrame is not getting a default height set to it, which is causing the embed to crop off most of the information.

Issue seems to be the iframe generated is not expanding to include all of the content from the embed. If I manually set height: 400px; on the iframe, for example, it shows the content. However, the bottom is still cut off (seems the height of the embed in this case is 457px). The ma.tt embed in the screenshot has a height as an attribute of the iframe, the NYTimes does not.

@mamaduka tested this issue in both the Block Editor and Classic Editor with similar results. See comment here: ​https://github.com/WordPress/gutenberg/issues/28490

[mdwolinski]

Current result of adding NY Times post Embed

[mdwolinski]

Embed with iFrame height manually adjusted.

[desrosj]

I'm able to reproduce the issue, but only for the NYTimes. I'm not sure why the height is being omitted, especially since it's being included in the REST API response.