1) Create a nontime versus nontime plot. Notice that the control panel's Line Setup section is dim and unavailable most of the time. Sporadically it becomes available.
Haven't been able to reproduce/observe this one - do you happen to recall what context it occurred in? (Does it switch between enabled/disabled while controls are being set, or while the user is doing nothing?)
This panel is currently set up to become available if the user chooses X-Axis or Y-Axis as time (before Apply has been hit, for consistency with other plot control panel behavior). But this may be confusing, if for instance the "...-Axis as Time" controls aren't visible (which happens often, since these controls are far apart; I can't fit both on-screen at once on laptop, for instance.)
Verified can't reproduce, Hackathon 9/25/2013 (Mac OS X & Windows 7)
Verified can't reproduce, Hackathon 9/25/2013 (Linux on oft2)