Hi Don. I'm trying to replicate the issue in a small test case, but am not having much luck. It does use a class break style, but the area shown is all within the same class break, so I'm not sure why some of it would have the Xs and some not.
I do have DrawingExceptionMode set to DrawException, but clearly nothing is being drawn.
I'm not doing anything too complex, basically three class breaks with values and an area style. The class break style is set on an in-memory feature layer applied to zoom level 20 and added to the base overlay layers.
Any wild guesses as to what I might be doing wrong?