Foliage density relative to brush size in 5.1

Development World Creation
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The number of mesh instances generated by the foliage brush appears to remain constant regardless of the size of the brush. If I’ve got the density set such that I get 20 instances inside a medium-size brush’s half sphere, after increasing the size of the brush, I still only get 20 sparsely spaced meshes. If I shrink the brush way down, it crams 20 inside the very small area.

So, it seems the density is a function of both the Density settings and the brush size. I expected the Density settings to control the number of instances within a certain area of landscape regardless of the size of the brush used to paint them there.

Is there a way to maintain the density relative to landscape area regardless of brush size?

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Yes. Look into the settings for each foliage type, and define what proximity other objects can have near them.

A good but different cheat to this is also to have a large collision box in the models, then delete off the collision after you are happy with the painting/procedural generation, whatever else.
The positions will “stick” until you recalculate or remove the foliage…

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Thank you for your help.