https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=237277
--- Comment #8 from Lorenzo Salvadore <phascolarc...@protonmail.ch> --- I think this is not a real bug, but a misconfiguration with hardware acceleration, as comment #6 and comment #7 also suggest. If you have a recent enough hardware, you should try to get hardware acceleration working properly. This page, although for arch linux, can help: https://wiki.archlinux.org/index.php/Hardware_video_acceleration If, on the contrary, you have an old graphic card, such as myself, you can disable hardware acceleration by starting your browser with --disable-gpu. I can confirm that this fixes the problem with falkon 3.1.0 and qt5-webengine 5.12.2_3 on FreeBSD 12.0-RELEASE r350836 amd64. -- You are receiving this mail because: You are the assignee for the bug.