Cannot uncheck radio button in PDF forms
Submitted by Janosch Deurer
If I check an option of a radio button in a PDF form I can never uncheck it. If you want the field to be empty again you have to fill out the whole PDF again.
While this could be possibly considered a design failure of the form, in real life there are many forms which have questions like "If XYZ applies, please answer the following question:" and being unable to delete such an accidental answer again can therefore be very confusing as a result. Also, it should be generally always possible to undo any action done to a PDF form.