Yes, it's a bug, or, at minimum, an unimplemented feature. The problem is that cron strings can express more powerful combinations than the UI can. For example, if you want to run a job every 3 hours Monday, Wednesday, and Friday, the cron string can express this, but the UI cannot. Technically, even though you've specified this as "runs every day at 2 pm", the UI can't parse this configuration. I suspect that if you used something like "0 0 14 * * Sun,Mon,Tue,Wed,Thu,Fri,Sat", it'd probably render correctly (but don't quote me on this). The cron job will run as expected, despite the UI appearing incorrectly.