AMP validation error: The attribute 'height' may not appear in tag 'symbol'.

[kmturley]

What's the issue?

AMP says it supports SVG in the spec:
https://amp.dev/documentation/guides-and-tutorials/learn/spec/amphtml#svg

But when using an SVG symbol for example:
https://developer.mozilla.org/en-US/docs/Web/SVG/Element/symbol

It throws an error:

AMP validation had errors:
The attribute 'height' may not appear in tag 'symbol'.
The attribute 'width' may not appear in tag 'symbol'.

How do we reproduce the issue?

Example here:
https://jsbin.com/mukisaf/edit?html,console,output

Steps to reproduce:

1. Create a default AMP page
2. Copy in the example SVG from https://developer.mozilla.org/en-US/docs/Web/SVG/Element/symbol
3. Run the page using the development validator url param: #development=1

What browsers are affected?

All browsers

Which AMP version is affected?

v0.1

[dreamofabear]

@ampproject/wg-caching

[Gregable]

It looks like width and height were added to that document in October 2018:

• https://developer.mozilla.org/en-US/docs/Web/SVG/Element/symbol$revision/1371828
• https://developer.mozilla.org/en-US/docs/Web/SVG/Element/symbol$revision/1422709

They should be added to the AMP spec as well.

[Gregable]

Fixed