Update to 2.28.3: * Fix kinetic scrolling with async scrolling. * Fix web process hangs on large GitHub pages. * Bubblewrap sandbox should not attempt to bind empty paths. * Fix threading issues in the media player. * Fix several crashes and rendering issues. * Security fixes: CVE-2020-9802, CVE-2020-9803, CVE-2020-9805, CVE-2020-9806, CVE-2020-9807, CVE-2020-9843, CVE-2020-9850,