Missing wall after switching to 5.1.328

[baron-instalsoft]

Version 5.1.328 doesn't generate mesh for one of IfcWallStandardCase from attached ifc file. Mesh is generated properly on version 5.1.317.

Assemblies and versions affected:

Xbim.Geometry 5.1.328

Steps (or code) to reproduce the issue:

1. Download XbimWindowsUI-Master
2. Upgrade Xbim.Geometry and Xbim.Geometry.Engine.Interop in XbimWindowsUI.sln from version 5.1.317 to version 5.1.328
3. Build, run, open attached ifc file
4. In 'Spatial view' tree find and select wall #108907 ('3grpYIm7j15hbtwidWc8TV')

Minimal file to reproduce the issue:

MissingWall.zip

Expected behavior:

Wall #108907 has graphical representation (as in 5.1.317)

Actual behavior or exception details:

Wall #108907 doesn't have graphical representation

[andyward]

Presumably due to:

GeomScene: #108903="IfcBooleanClippingResult" ["Is an empty shape"]