What type of issue is this?

Incorrect support data (ex. Chrome says "86" but support was added in "40")

What information was incorrect, unhelpful, or incomplete?

On this page for the Background Synchronization API: https://developer.mozilla.org/en-US/docs/Web/API/Background_Synchronization_API#browser_compatibility

The compatibility table states that this API is available for Android WebView, even though it's not and it's not even being considerate based on the discussions on the chromium issues group.

What browsers does this problem apply to, if applicable?

Chromium (Chrome, Edge 79+, Opera, Samsung Internet)

What did you expect to see?

The table should say that this feature is not available for Android WebView

Did you test this? If so, how?

Yes. I tested it by trying this API on a WebView and I wasn't able to make it work.

I also found several threads on the google chromium email list stating that this feature is not supported

Can you link to any release notes, bugs, pull requests, or MDN pages related to this?

https://developer.mozilla.org/en-US/docs/Web/API/Background_Synchronization_API#browser_compatibility

https://bugs.chromium.org/p/chromium/issues/detail?id=766077&sort=type&q=webview%20background%20sync&can=1

https://bugs.chromium.org/p/chromium/issues/detail?id=570713

https://groups.google.com/a/chromium.org/g/chromium-dev/c/zVO57FQFydg

Do you have anything more you want to share?

No response

MDN URL

https://developer.mozilla.org/en-US/docs/Web/API/Background_Synchronization_API

MDN metadata