I've created a new raining using Baluster as my in-fill and posts as posts. When the height of the railing goes below 4', the posts and balusters disappear graphically in plan.
I've adjusted the cut plane, this has no affect. I've also tested a plan region, that also didn't work.
The taller railing is working as expected. See attached images.
You were on to something there, the baluster was set to not show in plan/RCP but the setting to show when cut was checked. The odd thing was the shorter instance, even when I adjusted the cut plane, wasn't showing. Given the taller one was behaving as expected, I totally didn't think to check the family setting!
