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Add extra features and styles to make Firefox for Android your own.
CloseReview for Session Manager by Firefox user 95e2b2
Rated 5 out of 5 stars
57 looks good. but need Sessoin Manager in advance. So revert the vesion to 56. FF guys would support SM developers to make it compatible.
Wanna revert ?, https://support.mozilla.org/en-US/kb/install-older-version-of-firefox
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