I am experiencing a display issue in the drawing area of DraftSight.

The drawing area is not rendered correctly. When I move the mouse cursor over the drawing area, the cursor and the drawing become visible only for a brief moment and then immediately disappear again, creating a flickering or flashing effect. This happens continuously while moving the mouse.

To rule out a software issue, I uninstalled DraftSight 2024 and installed DraftSight 2026 SP3.0. Unfortunately, the problem remains exactly the same.

Additionally, the drawing area is no longer displayed with a uniform black background as it was previously. The lower third of the drawing area is shown in gray with a diagonal boundary, while the upper part remains black. The menus, toolbars, and other user interface elements are displayed normally and are not affected.

The issue occurs with every drawing, including newly created drawings, and is not limited to a specific file.

Could you please help me identify the cause of this problem?