How to Fix Huion Pen Jitter and Missing Strokes in Adobe Acrobat
Question details
The user is experiencing pen jitter and missing strokes when trying to make handwritten annotations in a PDF file using a Huion tablet.

- Product
- Adobe Acrobat
- Device & OS
- not provided
- Scenario
- Drawing or writing handwritten comments and annotations on a PDF document using a graphics tablet.
- Observed behavior
- After updating the software to version 19, the pen tablet jitters and intermittently omits parts of the strokes, despite functioning correctly in previous versions.
Verify that your Huion tablet is properly connected to your computer via USB or Bluetooth, and test the pen in another program like MS Paint to confirm if the jittering is isolated to Acrobat.
Update Huion Tablet Drivers and Firmware
Installing the latest tablet drivers ensures compatibility with newer software updates and is the most effective way to resolve stroke omissions and erratic pen behavior.
Major software updates, such as moving to version 19 of a PDF reader, often change how the program interacts with external hardware. An outdated tablet driver can struggle to communicate with the newly updated software rendering engine, resulting in missing strokes or noticeable input lag.
Check the back panel of your Huion tablet or your original packaging to find the exact model number.
Open your web browser and navigate to the official Huion support page at www.huion.com/support.
Use the search bar to find your specific model, then download the most recent driver and firmware updates available for your operating system.
Run the downloaded driver installer, follow the on-screen prompts to complete the installation, and restart your computer before testing the pen again.

Disable Windows Ink in Tablet Settings
Disabling Windows Ink can sometimes fix compatibility glitches and stop the jittering effect when drawing in PDF readers.
Annotate PDFs Smoothly with WPS Office
If you continue to experience input lag or missing strokes when commenting on PDFs, WPS Office provides a lightweight and highly responsive PDF reader and editor. It perfectly supports tablet pressure sensitivity and freehand drawing, ensuring your handwriting annotations are captured flawlessly.
- 1. Open your PDF in WPS Office: Launch WPS Office and click 'Open' on the homepage to browse and select the PDF document you want to annotate.
- 2. Access the Comment tab: Navigate to the 'Comment' tab located in the top ribbon to reveal the annotation toolbar.
- 3. Select the Draw tool: Click on the 'Graffiti' or 'Draw' tool to activate the freehand drawing mode.
- 4. Start writing: Use your Huion pen tablet to write, draw, or circle items directly on the PDF pages with smooth, uninterrupted strokes.

Frequently Asked Questions
Why does my Huion pen jitter only after updating my PDF software?
Software updates often introduce changes to rendering engines or hardware acceleration. If your tablet driver is outdated, it may not perfectly sync with the new update, causing tracking issues, jitter, or missing strokes during annotation.
Will rolling back to an older version of the software fix the pen issue?
Yes, if the tablet worked flawlessly in an earlier version, uninstalling the current version and reinstalling the older one can restore functionality as a temporary workaround until a patch or compatible driver is released.
Can I adjust the pen sensitivity to prevent missing strokes?
Yes. Open your Huion Tablet driver software, go to the Digital Pen settings, and try adjusting the pressure sensitivity curve. Sometimes, a curve set too hard can cause light strokes to be omitted by the software.




