Vertex painting on meshes placed with the Foliage tool?

Hey, so I have a bunch of meshes which have Vertex painting properties in their Material. I can paint just fine on them when I manually place them in the level. However, if I use the Foliage tool to place multiple of them at the same time, it appears I lose the ability to vertex paint them? The brush simply won’t appear over meshes placed that way. Is this a limitation of the tool or is there some kind of workaround?

Sorry to bump this, but is there any solution to this problem in newer versions of the engine?