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As a custom element author, it's not uncommon to create an element that utilizes some sort of dynamic "popover." There are many examples of this, but a few common ones include:
- Dialogs
- Dropdow…
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Splitting this out from #484
A `ShadowRoot` is a DocumentFragment node that should be able to be serialized by pretty-format & prettyDOM,
A few changes would be needed in [pretty-dom](https://g…
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https://drafts.csswg.org/resize-observer/#calculate-depth-for-node-h doesn't explain what
parent-traversal path means. Does it include Shadow DOM? In which way? Is ShadowRoot included?
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The README says
> There's no distinction between shallow rendering and full rendering as there's no significant performance implications and Shadow DOM negates the need for the distinction.
What…
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### Prerequisites
- [X] I have [searched](https://github.com/twbs/bootstrap/issues?utf8=%E2%9C%93&q=is%3Aissue) for duplicate or closed feature requests
- [X] I have read the [contributing guidelines…
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Two things have happened in the last year or two:
* Vanilla CSS has gotten [really, really good](https://www.spicyweb.dev/css-nouveau/) (shameless plug!).
* esbuild has gotten better at transpilin…
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when the global polymer option 'dom': is set to 'shadow', the FB.customCheckLoginState is not called after login.
Juste add the following lines:
`
window.Polymer = {
dom: 'shado…
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#### Please describe the feature you would like to request.
Implement custom components using angular elements for angular material components
#### What is the use-case or motivation for this prop…
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Support password manager on login
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When user changes value in line-edit using spinner button, the browser freezes and CPU usage goes 100%.
This was observed only on Firefox, starting from v. 46.
I was unable to reproduce the issue on…