[FlatLaf 3.5.1] Repaint issue on Windows 11

IAmBaguette commented 1 week ago

Issue Description

I'm experiencing a repaint issue with FlatLaf 3.5.1 on Windows 11. My setup includes an AMD graphics card (RX 6700 XT) with three monitors (1920 x 1080, 120Hz). The issue occurs when using a JFrame with a JMenuBar. Notably, the same project does not exhibit the issue on Windows 10 with an Intel integrated graphics card.

Details:

The issue persists across Java versions 11, 17, and 21 on Windows 11.
The FlatLaf demo app also shows the same repaint issue on Windows 11.

https://github.com/user-attachments/assets/9c2bcdc7-94ac-4856-bcb1-090b2b971867

Observations:

The issue only occurs with FlatLaf versions greater than 3.1. FlatLaf 3.0 works without any problems on Windows 11.
Setting the flatlaf.uiScale property to 2x appears to resolve the issue, but any smaller scale does not.
Using the -Dflatlaf.useNativeLibrary=false flag resolves the issue but removes the menu bar and title bar integration, which I would like to keep.
Dragging the JFrame window to another monitor forces a full repaint.
Resizing the window forces a full repaint.
A button click does not force a full repaint.

Steps to reproduce

Run the application.
Use the menu bar.

https://github.com/user-attachments/assets/b0ed217e-24fb-4a79-82fd-48a042c5da4a

Minimal reproduction project (MRP)

flatlaf-windows11.zip

nevemlaci commented 6 days ago

This is also a problem with JComboBoxes withing JTables, not just MenuBars.

2 monitors, 144hz both, RTX 3050 GPU, Windows 11 Education 23H2

IAmBaguette commented 4 days ago

I'm seeing the same problem with a JComboBox in the FlatLaf demo app.

https://github.com/user-attachments/assets/85841646-1b54-45ce-ae21-915554a6ffe1

However, I am unable to replicate the issue with JComboBoxes within a JTable when using the demo app. @nevemlaci Are you able to reproduce the same issue using the demo app for the JComboBoxes within a JTable?

nevemlaci commented 4 days ago

I'd love to but the demo app is impossible to navigate for me due to the repaint issues, 2 clicks and the whole thing just breaks down. I'm not sure where to look for a JTable + JComboBox in the demo app either, I've never used it.

KlemenDEV commented 2 days ago

Some of the users of our software which uses FlatLAF 3.5.1 are also reporting this issue

JFormDesigner / FlatLaf