I actually think there is a more serious issue that occurs here. When a writing a book or comedy routine whose automatically generated title is a duplicate of a previously written work, the sim will autonomously halt writing the current iteration of that work. Sometimes this happens immediately, and sometimes this occurs after a brief period of time, but it occurs fairly consistently. I have noticed this happening with a comedy routine and a children's book. IIRC, the order of events in which to reproduce this glitch are:
1. write a work with an automatically generated title,
2. start writing a work in the same genre, whose automatically generated title is the same as the one generated above,
3. stop writing, then resume writing the work with the duplicate title,
4. sim will automatically halt/interrupt writing
No error messages pop up, and this behavior occurs with autonomy in gameplay options both at 'Off', and at 'Full', as well as 'Disable Autonomy for Selected Sim' both checked and unchecked. Sometimes the halt is slightly delayed, so that if you switch to another household sim you won't notice that your sim has stopped writing that particular work, but you'll find that it's nearly impossible to complete the given work unless you scrap it and create a work with a different name. This definitely happens if the same sim is generating two works with the same name, but it might also happen if the exclusion counts globally across the household (e.g. Sim A writes a book and Sim 2 tries to write a book with the same name), but I haven't tested the latter. Nonetheless, with the short title list, this is bound to occur with high frequency.
Issue is current as of October 1, 2014 patch.