The Stairs pattern(up) don't build from the lowest.

The Flatten pattern just fill one level.

Thanks for reply.

The Flatten pattern only fills one level, don't you mean Horizon?

About Stairs, fixed.

Yes, I mean Flatten. I remember the Flatten can fill all the air blocks below the selected area, not just one level in 1.6.4

Mm...like this:

Yea. But its odd: the filler will build stairs one up from where they should be if the sides are of different lengths. There are probably more edge cases like this though.

outdated milestone, is this still an issue?

is this still relevant with all the changes already made to the filler?

no longer an issue with the new filler patterns

Now an issue again :P