CSS counter-reset is ignored in Firefox 82 and above
Categories
(Core :: Layout: Generated Content, Lists, and Counters, defect)
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(Reporter: main.coeurl, Unassigned)
Details
Attachments
(1 file)
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89.36 KB,
image/png
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Details |
fx.png
User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:96.0) Gecko/20100101 Firefox/96.0
Steps to reproduce:
CSS Test: https://codepen.io/arcxor/pen/BamWeGG
CSS counter-reset is ignored in Firefox 82 and above. And not ignored in Firefox 81 and below. The same is true for Windows and macOS.
I was tested on https://live.browserstack.com/dashboard
Actual results:
Behaved as if counter-reset was unspecified.
Expected results:
See attached image.
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Comment 1•2 years ago
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The Bugbug bot thinks this bug should belong to the 'Core::Layout: Generated Content, Lists, and Counters' component, and is moving the bug to that component. Please revert this change in case you think the bot is wrong.
CSS Test2: https://codepen.io/arcxor/pen/ZEaKbjK
If you use counter-set instead of counter-reset, it will behave as expected.
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Comment 3•2 years ago
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mozregression finds this range. It looks like bug 1548753 introduces this behavior change.
Emilio, do you know if this is an expected behavior change?
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Comment 4•2 years ago
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Yes, our behavior follows the current spec, afaics.
Oh, thank you.
I did not understand the latest specification of counter-reset and did not know which behavior was correct. I learned a lot. I will read the specification deeply.
After reading https://github.com/w3c/csswg-drafts/issues/5477, I understood the background as to why this situation arose.
The following URL is a test on the behavior of counter-reset which shows that the latest Firefox is correct and older Firefox and other browsers are incorrect.
- different between counter-reset and counter-set: https://codepen.io/arcxor/pen/gOXjJqX
In the latest Firefox, numbering with counter-reset is more reasonable. It was my understanding that the previously modified bug 1548753 was also talking about this.
MDN's description of counter-reset https://developer.mozilla.org/en-US/docs/Web/CSS/counter-reset is not appropriate and I will work to have it fixed.
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Comment 7•2 years ago
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That'd be awesome, thank you!
Description
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