Icon component causes invalid or unexpected content error

[narthur]

Describe the bug
Using the Icon component in a Gutenberg block results in invalid content error on editor refresh. The "Resolve" action shows that it wants to change the SVG "viewbox" attribute to "viewBox"

To reproduce
Steps to reproduce the behavior:

1. Use a block containing the wp.components.Icon component.
2. Save the page.
3. Refresh the editor.
4. Notice the invalid content error, and click "Resolve" to see found difference.

Expected behavior
Using wp.components.Icon should not trigger an invalid content error.

Screenshots

Desktop:

• OS: macOS Mojave 10.14
• Browser: Chrome 75.0.3770.142

Additional context

• WordPress 5.2.2

[narthur]

I looked up the Icon component source file and the SVG primitive source file. However it wasn't immediately apparent to me how to go about fixing the issue.

[narthur]

I switched away from using the Icon component, and found that I was still receiving the error. This time it looks like el('a' ... ) is at fault, as extra parameters being injected seem to be causing the validation to fail:

[jordesign]

Hi @narthur - just checking in to see if you still find this issue in place?