Tested using 6.0 r1 on windowsxp
Instead of breaking the column at the second paragraph, it breaks the page. This only seems to happen if there is some other content earlier on the page. Remove the first div, and the columns break where you would expect.
Since most pages where I wanted to use this have content earlier on the page, this means forced column breaks are unusable using column-break-before (column-break-after seems to work though).
<div>foo</div>
<div style="columns:2;column-gap:1em">
<p>Aenean id velit eget metus posuere feugiat. Fusce imperdiet sem eget leo aliquam tincidunt.</p>
<p style="column-break-before:always">Maecenas vitae est et mi mollis consequat. Suspendisse nibh. Sed laoreet est et lorem. Nulla facilisi. Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas. Proin blandit lacus vel nisi suscipit pharetra. Curabitur lacus pede, hendrerit eget, pulvinar in, tempor et, sapien. Sed sed ligula.</p>
</div>Instead of breaking the column at the second paragraph, it breaks the page. This only seems to happen if there is some other content earlier on the page. Remove the first div, and the columns break where you would expect.
Since most pages where I wanted to use this have content earlier on the page, this means forced column breaks are unusable using column-break-before (column-break-after seems to work though).
