There is a bug in the CSGO FGD:
Quote@PointClass base(Targetname) sphere(radius) = point_hiding_spot:
"Adds a hiding spot to the nav mesh at this location."
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This class is not closed. I discovered this because WW can crash when parsing the FGD now.
The fix for WW users is to edit the FGD file to be like this:
Quote@PointClass base(Targetname) sphere(radius) = point_hiding_spot:
"Adds a hiding spot to the nav mesh at this location."
[
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Since I almost never get any replies when emailing Valve, can someone with some good connections forward this info onward.