JabRef version

5.6 (latest release)

Operating system

Windows

Details on version and operating system

Windows 10

Checked with the latest development build

• I made a backup of my libraries before testing the latest development version.
• I have tested the latest development version and the problem persists

Steps to reproduce the behaviour

1. Use JabRef
2. Open a dialog with a button
3. Highlighted buttons (left on the screenshot) or hovered ones (right on the screenshot) show sharp corners.

Appendix

Problem marked in yellow.