[German]The Mozilla developers had only released version 91.0.0 (including the ESR version) on August 10, 2021, but now had to postpone the 91.0.1 update of the Firefox browser to October 17, 2021. The version 91.0.1 is a maintenance update, which should fix bugs.
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Firefox 91.0.1
According to the release notes, version 91.0.1 brings the following bug fixes and security fixes in addition to some non-detailed stability improvements. Laut den Release Notes bringt die Version 91.0.1 neben einigen nicht detaillierten Stabilitätsverbesserungen folgende Fehlerbehebungen und Sicherheitsfixes.
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Fixed an issue causing buttons on the tab bar to be resized when loading certain websites (bug 1704404)
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Fixed an issue which caused tabs from private windows to be visible in non-private windows when viewing switch-to-tab results in the address bar panel (bug 1720369)
In addition, a vulnerability rated as high has been fixed in this release.
Firefox 91.0.1 esr
A Firefox 91.0.0 esr version with one year of long-term support has also been made available. On the respective web page there are notes that the same bugs as in Firefox 91.0.1 have been fixed and security fixes have been made.
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The new Firefox and the ESR variants can be downloaded from this website for various platforms (the variant is to be selected via the displayed list boxes).
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