After completing an editable form with no restrictions and fillable fields in Acrobat DC, the data typed into the fields does not save. The form is blank when the document is saved and then reopened. Even when "Save as Other" --> "Reader Extended PDF" --> "Enable More Tools" is turned on, the data in the fields cannot be saved. This is a frustrating and time-consuming issue since users must complete the form, and if there are any errors, must then complete the entire form over again from scratch. I have now wasted more than two hours total completing a form that should only take 15 minutes to finish, and well over one hour searching for troubleshooting information (despite being an advanced Acrobat user of more than 15 years).