Great, it seems we are in agreement on column balancing with specified height.
A related issue is the behavior of column-span in overflow, with specified height.
If in the following markup some column-span elements appear in overflow, it is to be defined how many columns they span:
<div style=“columns:3; height:250px;”>
<p>AAAAAA...</p>
<H2 style=“span: all;”>BBBBBB…</H2>
<p>CCCCCC...</p>
<H2 style=“span: all;”>EEEEEEE…</H2>
<p>FFFFFF...</p>
<H2 style=“span: all;”>HHHHHH…</H2>
<p>IIIIIII...</p>
</div>
We think this rendering would be the most logical:
[Description: cid:image007.png@01CB0C71.5C648380]
Would you agree?