It looks to me like your plan has Obadiah VERSE 1 as the portion that is supposed to be read. Otherwise it should just say "Mark Obadiah Read."
I'd like to see the plan if you don't mind. I wasn't able to get any unexpected behavior in my tests.
Go to Devotional, Manage Reading Schedules, right-click on your plan, and do Save as Template. If you change the file type to plain text it would be easy to see just looking at it with a text file.