Is this easily reproducible? If I create a hatch, then create a Layout, I can easily see the hatch… so obviously I’m not doing something you are…
In these types of cases, it’s always a good idea to provide an example 3dm file so that we’re all not trying to guess at how to duplicate what it is you’re seeing.
So, if you have an example that shows the problem, and you can release it publicly, then please post it…if it’s a confidential file, then there are other ways to get it to McNeel… But I would first try to come up with a simple example where a hatch or hatches don’t show up in Layout space…and then confirm it happens all the time… (i.e. Close Rhino, start Rhino, load the file, confirm the problem exists, …repeat that process 5 times)… Then post it here.
Am I also understanding correctly that the same file(s) load and display correctly on other (colleague’s) computers? If so, then this could be something as simple as a configuration setting on your system. It also may have something to do with how you’ve setup and positioned your detail views…which is another reason why getting an example to us would be helpful.
As of right now, I do not know what would be specifically limiting hatches in Layouts…if you can see the same hatches in model views, and they display and act correctly in all situations, then obviously this isn’t a video card or video card driver issue, and is most likely a bug in Rhino that you’re able to uncover and we’re not…so we need to just keep digging more, and collecting as much information from you as possible.