Safari doesn't seem to respect orphans and widows to spec in multi-column

Created attachment 460708 [details]
safari-screenshot

Steps to reproduce the problem:
1. go to https://codepen.io/samanthaj/pen/poLjjVE
2. Make the browser window wide and short enough that box "3" fits but box "4" is pushed off the bottom

Problem Description:
With the browser window wide enough Safari should be putting 2 of each of the 6 boxes in a their own columns since according to the spec the default values of widows and orphans are both 2

See screenshots

Created attachment 460709 [details]
chrome-screenshot

It looks like Safari just doesn't have the correct defaults?

If I add

   widows: 2;
   orphans: 2;

it displays the same as Chrome. The spec shows the default values are 2

https://drafts.csswg.org/css-break/#widows-orphans

[Karl Dubost]

Created attachment 460838 [details]
rendering safari, firefox, chrome

Firefox gets the same behavior than Firefox.
Chrome stacks the boxes.

[Radar WebKit Bug Importer]

<rdar://problem/96924872>

[Karl Dubost]

Thanks for the bug report with the tests!

default computed values:

# orphans

safari: auto (See https://bugs.webkit.org/show_bug.cgi?id=219882)
firefox: n/a (see https://bugzilla.mozilla.org/show_bug.cgi?id=137367)
chrome: 2

# widows

safari: auto (see https://bugs.webkit.org/show_bug.cgi?id=219882)
firefox: n/a (see https://bugzilla.mozilla.org/show_bug.cgi?id=137367)
chrome: 2



Tested in: 
Safari Technology Preview 16.0
Firefox Nightly 104.0a1
Google Chrome Canary 105.0.5176.0


This is probably a duplicate of https://bugs.webkit.org/show_bug.cgi?id=219882

[Karl Dubost]

*** This bug has been marked as a duplicate of bug 219882 ***