version2.0,
in list radio question, you can only input qcode less than 5 words!
in other question, like multiple choice, 7words is also ok.
i think it's bug of radio question,is it?

Please test if this is fixed at our demo. The Limesurvey online demo always runs the latest version so you can use it for testing if a bug is fixed or to just play around with the software. You can log in at demo.limesurvey.org/admin using username=admin and password=test

If so, please update.