Shouldn't rendered timelines stay rendered?
Late last night I rendered a timeline. It worked, and all the orange bar disappeared. I woke up this morning and opened FCPX. It opened to the same project, of course, but the orange bar indicating that the project was not rendered was present over the majority (but not all) of the project's timeline.
This particular project consists almost entirely of compound clips, if that matters. But I didn't edit anything, so I don't think it should matter. I rendered the timeline, exported the master file, closed FCPX, and went to sleep. This morning I opened FCPX and the saw much of the orange bar back.
What could cause this? I think I've seen this sort of thing happen before with other projects, but it was only a very small part of some timeline.
iMac (27-inch, Late 2013), OS X Mavericks (10.9.1), i7 3.5 GHz, 32MB RAM, 4GB NVIDIA