This is an important update: if you have updated your Integrator 3 installation to version 3.0.16, you must update to version 3.0.17. A bug was discovered causing the visual rendering capability to be completely disabled regardless of any settings being used.
This is not a security issue, it is an oversight that essentially bricks the product. User integration would still function, but the visual wrapping and rendering would result in no error being reported.
Please be sure to run 3.0.17 if you are on 3.0.16 prior to opening any tickets concerning rendering issues in I3. Thanks!