Mozilla Firefox 54.0.1 was first offered to the stable release channel users on June 29, 2017, and, according to the official release notes, it fixes a Netflix issues for users of Linux-based operating systems, addresses a PDF printing issue, and resolves multiple tab-related issues that have been reported from Firefox 54.0. Among these, we can mention display problems with the tab title and the opening of a new tab, an issue when multiple tabs were opened, as well as a tab display issue that could occur when downloading files. If you experienced any of these bugs with Firefox 54.0, update to version 54.0.1 as soon as possible.