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Window display issues in the desktop app (broken / overlapping UI)

Windows are not rendering correctly, overlapping each other, or displaying as blank

Written by Petr Pech

In some cases, the ABRA Flexi desktop application may display incorrectly – windows appear "broken", overlap each other, fail to refresh when switching, or remain partially blank (typically seen in forms such as VAT Return).

This issue is caused by a conflict between Java rendering and graphics card drivers.

What can this look like?

Solution

1. Update

  • update your graphics card drivers


2. Adjust rendering settings (recommended solution)

  1. Open the file:
    C:\Program Files (x86)\WinStrom\parametry.txt

  2. Find the line with parameters (which contains e.g. -Xmx)

  3. Add the following parameter:

-Dsun.java2d.d3d=false

👉 Ideally, insert the parameter before -Xmx, e.g.:

-splash:splashscreen.png -Dsun.java2d.d3d=false -Xmx1g ...

Then save the file and restart Flexi.

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