If autocomplete does not work, DON'T TRY TO WRITE IN MANUALLY AND SUBMIT! You'll risk to be flagged.
I asked about this in a CF ticket and they answered so...
Thanks for writing in. We have read your ticket.
We prefer that any unusual issue you encounter in a job be reported through our support ticket system. Instead of answering the questions and clicking Submit & Continue, please click on Help, File a ticket to explain the situation, then use the Give up option to leave the job. This will prevent you from being expelled or flagged or possibly banned. Please keep this in mind when working on our jobs.
I completed 5 tasks autocompleting by myself, and for now no flag, but I think it's better for all to give up and file a ticket if you find again the bugged one.
Sa Eng.dela foruma!
Dal je neko od vas pisao tiket sa pitanjem? Ja sam upravo odustao na 16 i poslao pitanje i necu ga raditi dok ne dobijem odgovor. Al mi pravo glupavo da ga stavljaju na listu vec toliko dana zaredom iako masa ljudi ima problem sa autocompletom