Mozilla Firefox 139.0.1 includes a crucial fix for an irritating bug that caused artifacts with Nvidia GPUs in certain setups. This bug was introduced with version 139.0, likely because Mozilla disabled a blocklist that prevented DirectComposition from being used with Nvidia GPUs, and multi monitor setups with different refresh rates.
Mozilla launched Firefox 139.0 on May 27th, introducing a slew of new features, such as custom new tab backgrounds, full-page translation for supported extensions, just to name a few. However, shortly after the update went live, forums and Reddit threads were teeming with user complaints of graphical anomalies, glitches, and screen corruption. Essentially, if 60 FPS media is running on the secondary monitor, interacting with the primary high-refresh rate display can induce visual artifacts.
