Other PDF Issues

Fix Adobe Fill & Sign Text Invisible in Android Dark Mode

Tauseeq Magsi Oct 23, 2026 869 views

Question details

The user is unable to see the text they type into the Adobe Fill & Sign app because the characters become invisible when the phone's dark mode is active.

Product: Adobe Fill & Sign
Device & OS: Android (Xiaomi POCO X3 NFC)
Scenario: Filling out and signing a PDF document using a mobile application while the device system is set to dark mode.
Observed behavior: Typed text and characters blend into the background or fail to render visibly, making it impossible to accurately fill out PDF forms.

Before you start

Make sure to save your current progress in any open PDF documents before changing system display settings or restarting applications to avoid losing unsaved data.

Solution 1Recommended

Temporarily Disable System Dark Mode

Switching your device back to light mode is the fastest and most reliable workaround for text visibility issues caused by forced dark themes.

Some mobile applications struggle to correctly invert colors when a system-wide dark mode is applied. This causes black text to be typed onto a dark background, making it appear invisible. Reverting to a light theme usually resolves this immediately.

Open Device Settings

Navigate to the Settings app on your Xiaomi POCO X3 NFC or Android device.

Access Display Settings

Tap on 'Display' to view your current screen appearance options.

Switch to Light Mode

Select 'Light Mode' to disable the system dark theme. Once applied, close and reopen the Adobe Fill & Sign app to check if the text is now visible.

App-Specific Dark Mode Toggle: On some Xiaomi MIUI devices, you can go to Settings > Display > More Dark mode options, and specifically disable dark mode for Adobe Fill & Sign while keeping the rest of your phone in dark mode.

Solution 2

Update or Reinstall the Application

Updating the app ensures you have the latest bug fixes from the developer regarding dark mode compatibility.

Seamless PDF Filling & Signing

Fill and Sign PDFs Effortlessly with WPS Office

Avoid dark mode text rendering bugs entirely by using WPS Office. Our built-in mobile PDF tools allow you to easily add text, insert signatures, and manage forms on Android, fully optimized for both light and dark themes.

1. Open your PDF: Launch WPS Office on your mobile device and open the PDF form you need to fill out.
2. Select Fill & Sign Tools: Tap the 'Tools' menu at the bottom, select the 'PDF' tab, and choose 'Fill & Sign' or 'PDF Edit'.
3. Add Text and Signatures: Tap anywhere on the document to insert text or add a saved electronic signature smoothly, without display glitches.

Flawless dark mode support for mobile PDF reading and editingFully compatible with standard PDF forms and Adobe Acrobat documentsBuilt-in electronic signature and text insertion toolsLightweight, all-in-one mobile app for PDF, Word, Excel, and PowerPoint

microsoft office alternative - wps office

Frequently Asked Questions

Why does dark mode cause text to disappear in some PDF apps?

When an Android system forces dark mode onto third-party applications, apps that lack native dark theme optimization may fail to invert text colors properly. This results in dark text being rendered over a dark background, rendering it practically invisible.

Can I turn off dark mode for just one app on my Android phone?

Yes, depending on your device's manufacturer. For example, on Xiaomi phones running MIUI, you can navigate to Settings > Display > More Dark mode options, and toggle off the dark mode override for specific apps like Adobe Fill & Sign.

Will clearing the app cache fix the invisible text problem?

Clearing the app cache may help if the display glitch is caused by temporary corrupted data. Go to Settings > Apps > Adobe Fill & Sign > Storage, and tap 'Clear Cache'. However, if it's a fundamental dark mode compatibility issue, switching to light mode is required.

PDF Troubleshooting