#1306 causes a regression in nested list alignment

[Sub6Resources]

          This PR causes a regression in nested list alignment in the following HTML snippet.

<div> <ol> <li> <ul> <li>to read</li> </ul> <div> <div> <div> <div> ミルトンの <ruby>作 <rt>さく</rt> </ruby> <ruby>品 <rt>ひん</rt> </ruby>を <span>読んだ</span>ことがありますか。 </div> <div>Have you ever read Milton's works? <span>[1]</span></div> </div> </div> </div> </li> <li> <ul> <li>to recite (e.g. a sutra)</li> <li>to chant</li> </ul> </li> <li> <ul> <li>to predict</li> <li>to guess</li> <li>to forecast</li> <li>to read (someone's thoughts)</li> <li>to see (e.g. into someone's heart)</li> <li>to divine</li> </ul> <div> <div> <div> <div> <ruby>彼 <rt>かの</rt> </ruby> <ruby>女 <rt>じょ</rt> </ruby>の <ruby>心 <rt>こころ</rt> </ruby>の <ruby>動 <rt>うご</rt> </ruby>きを <span>読む</span>ことさえできなかった。 </div> <div> I could not even make a guess at the working of her mind. <span>[2]</span> </div> </div> </div> </div> </li> <li> <ul> <li>to pronounce</li> <li>to read (e.g. a kanji)</li> </ul> </li> <li> <ul> <li>to decipher</li> <li>to read (a meter, graph, music, etc.)</li> <li>to tell (the time)</li> </ul> <div> <div> <div> <div> <ruby>私 <rt>わたし</rt> </ruby>の <ruby>頭 <rt>あたま</rt> </ruby>は <ruby>楽 <rt>がく</rt> </ruby> <ruby>譜 <rt>ふ</rt> </ruby>を <span>読む</span>ようにはよく <ruby>慣 <rt>な</rt> </ruby>らされて <ruby>居 <rt>お</rt> </ruby>りますが、どうも <ruby>暗 <rt>あん</rt> </ruby> <ruby>号 <rt>ごう</rt> </ruby>を <span>読む</span>には <ruby>適 <rt>てき</rt> </ruby>しません。 </div> <div> My mind is quite accustomed to reading music, but deciphering secret codes is not its forte. <span>[3]</span> </div> </div> </div> </div> </li> <li> <ul> <li>to count</li> <li>to estimate</li> </ul> <div> <div> <div>Note</div> <div>now mostly used in idioms</div> </div> <div> <div> <div> <span>See:</span> <a> <span >さばを <ruby>読 <rt>よ</rt> </ruby>む </span> </a> </div> <div> to manipulate figures to one's advantage; to count wrongly on purpose; to inflate or deflate one's age </div> </div> </div> </div> </li> <li> <ul> <li>to read (a kanji) with its native Japanese reading</li> </ul> <div> <div> <div>Note</div> <div>also written as 訓む</div> </div> </div> </li> </ol> </div>

3.0.0-beta.2 (Expected)

Result on this PR

Originally posted by @shovel-kun in #1306 (comment)

[Sub6Resources]

Added a rough fix in #1468 that gets us roughly back to the 3.0.0-beta.2 behavior. The core issue is unfortunately quite nuanced, so a better fix may take quite a bit of work. Unfortunately probably not a high priority issue (especially since the official CSS spec doesn't actually specify exactly how the markers on list items with block children should be placed)