ReinforcingBar flat representation.
The rebars visualization in some directions shows flat representation. This issue doesn't happen in the precompiled version of Xbim Explorer.

You'll have to provide a bit more information before anyone can take a look.
Which versions of Xplorer worked? Which versions don't? (it sounds like you may have built Xplorer yourself - if so, which branch?)
Are you able to share the model?
Yes, I've built XbimXplorer master branch. You can find the model in the following link https://www.dropbox.com/sh/b3uiz4d3b7nxxz1/AABYnnMhOZA3HjlwsC0sbpHfa?dl=0
Confirmed in current develop. It's probably a Geometry issue, I'll see how to log it properly.
Attached reduced repro file.