Fix PDF Dropdown Fields Showing the Same Selection in Acrobat
Question details
The user needs to resolve an issue where two uniquely named PDF dropdown fields display identical selections during print preview in Adobe Acrobat or Reader.

- Product
- Adobe Acrobat / Adobe Reader
- Device & OS
- not provided
- Scenario
- Previewing or printing a PDF form containing multiple dropdown fields.
- Observed behavior
- Dropdown fields with different names and selections incorrectly mirror each other and show the same value in the print preview window in Acrobat, while functioning correctly in standard view and other PDF software.
Ensure you have access to the original editable PDF form and the appropriate PDF editing software to modify form field properties.
Verify and Update Dropdown Field Properties
Checking for hidden shared hierarchies, duplicate export values, or conflicting scripts is the most effective way to fix mirroring form fields.
Sometimes, fields that appear to have different names might share a root name in the hierarchy or have conflicting export values that cause Acrobat to link their behaviors during print preparation.
Open the PDF in Adobe Acrobat and select 'Prepare Form' from the tools menu.
Right-click the first problematic dropdown field and select 'Properties'.
Go to the 'General' tab and ensure the 'Name' field is completely unique (e.g., Dropdown1 and Dropdown2) and not part of the same parent group.
Navigate to the 'Options' tab to verify that the 'Export Values' are distinct for each selection if applicable.
Check the 'Calculate' and 'Format' tabs to ensure no custom JavaScript is inadvertently copying values from one field to another.

Update PDF Software and Test Alternatives
Software bugs in older versions of Acrobat or Reader can cause print preview rendering issues for PDF forms.
Use WPS Office to View, Fill, and Print PDF Forms Flawlessly
Since other PDF software renders the fields correctly, you can use WPS Office as a reliable, lightweight alternative to open your PDF form, make selections, and print without print preview rendering errors.
- 1. Download WPS Office: Download and install WPS Office on your computer.
- 2. Open the PDF form: Right-click your PDF form, select 'Open with', and choose WPS Office.
- 3. Fill out fields: Fill out your dropdown fields as required; they will function independently without mirroring.
- 4. Print the document: Click 'Print' or press Ctrl+P to view the print preview and print your document accurately.

Frequently Asked Questions
Why do PDF form fields duplicate my typing or selections?
This usually happens when multiple fields share the exact same name or share the same parent name in their field hierarchy. Renaming each field with a unique identifier will solve this.
How do I view the field hierarchy in Adobe Acrobat?
In form editing mode, open the 'Fields' pane on the right side of the screen. This lists all form fields and shows how they are grouped or nested.
Can custom calculation scripts cause dropdown fields to mirror each other?
Yes, if a dropdown field has a calculation script that pulls data from another field, changing one will automatically update the other. Check the 'Calculate' tab in Field Properties to remove or fix the script.
Why does the print preview differ from the standard PDF view?
Print preview relies on a specific rendering engine that may handle form flattening or JavaScript differently than the standard viewing mode. Updating your PDF reader or checking 'Print As Image' in advanced print settings can sometimes bypass these glitches.




