It wasn't an issue with it getting backed up or anything like that. Lincoln drivers literally couldn't figure out how to properly navigate around it without getting into accidents. They weren't getting, among other things, that interior lanes could be exiting or continuing on. So they simplified it by blocking off some of the lanes.
It does back up more now, no question. And it'll only get worse now since they've put the coverings on the chain link fences. Lincoln drivers approach roundabouts in the complete opposite fashion they're meant to. Drivers here approach circles with the idea that they will HAVE to stop, rather than how you should, which is that you will NOT have to stop. So these fences obstruct your view of oncoming traffic until you're right at the circle itself, which will only encourage these morons to approach the circle like they will be stopping no matter what.
I've never seen a city that is so idiotic in terms of traffic planning, and when you couple that with the horrible nature of Lincoln drivers, it's what makes driving in this city a complete disaster.
Edit - And I've said this before in the other thread, but what makes that roundabout project so ******* annoying is that the intersection didn't need anything like that. They completely pissed everyone's money away on a useless project that 95% of Lincoln drivers will never be able to navigate and that wasn't necessary in the first place.