PDF Editing Issues

How to Fix Adobe Acrobat Premium Corrupting PDF Check Marks and Dates

Anum Mushtaq Oct 18, 2026 869 views

Question details

Users need to resolve a display issue where filled PDF forms show corrupted symbols instead of proper check marks and dates.

How to Fix Adobe Acrobat Premium Corrupting PDF Check Marks and Dates

Product: Adobe Acrobat Premium
Device & OS: iPadOS (iOS)
Scenario: Filling out and saving interactive PDF reports that contain date fields and checkboxes.
Observed behavior: Saved PDF documents display random inverted and mirrored check marks and dates on the screen, appearing as though years of reports have been corrupted.

Before you start

Verify that your iPad is updated to the latest iOS version, and create a backup copy of your original blank PDF forms before testing any fixes.

Solution 1Recommended

Export or Share the PDF to Fix the Display Glitch

Use the built-in share feature to push the document to another app, which forces the PDF engine to render the corrupted visual elements correctly.

The inverted and mirrored check marks are often caused by a temporary rendering bug within the mobile app's interface rather than permanent file corruption.

By exporting the file out of the local reader environment, third-party apps and email clients will read the underlying correct data and display the check marks and dates as originally intended.

Open the corrupted PDF

Launch Adobe Acrobat on your iPad and open the fillable form that currently displays the corrupted check marks and dates.

Access the Share menu

Tap the 'Share' or 'Export' icon located at the top right corner of the application screen.

Select an external destination

Choose the option to 'Send a Copy' via Email, or select a third-party application from your sharing menu to upload the document.

Verify the document

Open the emailed file or access it within the third-party app to confirm that the check marks and dates are now displaying correctly without mirroring.

Export or Share the PDF to Fix the Display Glitch

Data Integrity Maintained: Even though the forms appear incorrect on your screen, your entered data is usually completely intact and safe. Sharing the file immediately restores its standard appearance.

Reliable PDF Editor

Fill PDF Forms Seamlessly with WPS Office

Avoid frustrating visual bugs and rendering glitches by using WPS Office to fill out your PDF forms. WPS PDF provides a highly stable environment for interacting with checkboxes, dates, and text fields on any device.

1. Install WPS Office: Download WPS Office from the App Store and launch the application on your iPad.
2. Open your PDF form: Navigate to the 'Files' tab and select your interactive PDF report to open it in the built-in PDF viewer.
3. Activate form filling: Tap the 'Fill & Sign' or 'Edit' tool on the top toolbar to interact with the PDF's active fields.
4. Input your data: Tap directly on the checkboxes and date fields to input your data reliably without any mirroring or inverted graphics.
5. Save and share: Tap the 'Save' icon or use the 'Share' button to safely export your perfectly formatted PDF report.

Flawless and accurate rendering of check marks and date fieldsFully compatible with standard PDF formats and Adobe Acrobat filesConsistent cross-platform experience on iOS, Android, Windows, and MacFree and intuitive PDF form-filling capabilities

microsoft office alternative - wps office

Frequently Asked Questions

Why do my PDF check marks look inverted or mirrored?

This is typically caused by a known rendering bug in certain versions of mobile PDF readers (such as version 21.02.00 on iOS). The application struggles to display the font symbols correctly on the screen, even though the data is stored accurately within the file.

Are my saved PDF reports permanently damaged?

No. The issue is almost always a localized display glitch within the specific mobile application you are using. Opening the same PDF on a desktop computer, sending it via email, or viewing it in another app usually proves your data is completely safe.

How can I prevent PDF forms from glitching on my iPad?

Ensure your iPad's operating system and your PDF editing apps are always updated to the newest versions, as developers patch these rendering bugs frequently. If the issue persists, switching to an alternative robust PDF editor like WPS Office can prevent the problem.

PDF Troubleshooting