html.elements.input.type_file - iOS doesn't implement "accept" with filename extensions

What type of issue is this?

Incorrect support data (example: BrowserX says "86" but support was added in "40")

What information was incorrect, unhelpful, or incomplete?

This page specifies that the "accept" attribute may contain file extensions as file type specifiers. This does not seem to work on iOS.

What browsers does this problem apply to, if applicable?

No response

What did you expect to see?

I expect to see "partial support" instead of "full support" in the Browser compatibility matrix.

Did you test this? If so, how?

Opening up a webpage with an input element and noticing that the files were not filtered.

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

https://caniuse.com/input-file-accept

Do you have anything more you want to share?

No response

MDN URL

https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input/file

MDN metadata

Use the MDN URL and the html.elements.input.type_file query as the entry point, then inspect the compatibility data for the accept attribute and iOS. Verify the reported filename-extension behavior against the existing support notes and update the matrix only if confirmed. Done means the iOS entry accurately reflects partial support.