[css3-multicol] column balancing and fixed height (RE: Question on Flexbox balance implementation)

(Oops, I did send it to the list already. I will get a test case and attach.)

To restate the question:

If the height of a multi-column container is explicitly specified, then the column-fill: balance property is ignored in current implementations. The current spec doesn't seem to say anything on this. Can we get it specified?

In my opinion, disabling balancing with fixed columns is somewhat easier to implement, but it is a case of property side effect that we generally tend to avoid.

Thanks
Alex