A new issue was discovered in the recently released Firefox 66, forcing Mozilla to halt the deployment of the update. The problem reportedly affects PowerPoint Online.
It is reported that the updated browser cannot save text when inputting it into an online presentation. Currently, Mozilla is testing fixes in its Firefox Nightly builds, but until then, the deployment of the release version is on hold.
For those who regularly use the 'orange' browser and do not want to switch, but need to use PowerPoint Online in Firefox, it is necessary to change the setting dom.keyboardevent.keypress.hack.use_legacy_keycode_and_charcode to powerpoint.officeapps.live.com. After refreshing the page, everything will work.
Mozilla is expected to use its Normandy preference remote update system to distribute the fix to all users as soon as it has been properly tested. By the way, the web version of Skype also stopped working in Firefox earlier. A curious coincidence considering that both programs are developed by Microsoft.
It is worth noting that the developers have already released version 66.0.1. It addresses two critical vulnerabilities that allow code execution when handling specially formatted web pages. The gaps were in the JIT compiler code. In the first case, invalid alias data could be passed to the JIT when executing the Array.prototype.slice method. This allowed for a buffer overflow. In the second case, the issue was related to incorrect type output when processing object changes using the '__proto__' construct. This variant allowed reading and writing data in arbitrary memory areas.
Recall that Firefox 66 introduced a sound-blocking feature for tabs that may contain video ads. There is also a new tab search feature that could be useful for those working with dozens of web pages simultaneously. Additionally, users of Ubuntu 18.10, 18.04 LTS, and 16.04 LTS can now install Firefox 66 from the repositories.
Source: 3dnews.ru
