[Webkit-unassigned] [Bug 181084] New: Special list-item counter starts from an incorrect number for ::before and ::after

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=181084

            Bug ID: 181084
           Summary: Special list-item counter starts from an incorrect
                    number for ::before and ::after
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: CSS
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: kizmarh at ya.ru

## Steps to reproduce the problem:

1. Go to https://codepen.io/kizu/pen/QaKjmJ
2. Look at the custom counters

Or

1. Create an ordered list, optionally with a `start` attribute.
2. Add custom styles for the list items by using `counter(list-item)`.

## What is the expected behavior?

This counter should start from either the `1` or from the number set by `start` attribute.

## What went wrong?

The number the counters start from are wrong by one.

However, when the `value` attribute is used, the value is correct.

Edge browser renders everything in a correct way.

There is a hacky fix/workaround for this issue:

    ol.fix:not(*:root) > li:first-child:not([value]) {
      counter-increment: list-item 0;
    }

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