This issue could not be reproduced with the aarch64 build from 13th of February (prior to the patch), on Lenovo Yoga ARM device. I have downloaded the Nightly aarch64 installer build from: http://archive.mozilla.org/pub/firefox/nightly/2019/02/2019-02-13-21-34-09-mozilla-central/ Then I have modified the value of the "security.sandbox.content.level"pref to 5 and restarted the browser. After the browser restarted with the same (older/affected) build version, all and any page that I have attempted to access loaded as expected. Considering that I could not reproduce this issue, I cannot verify the fix. Am I doing something wrong?
Bug 1515088 Comment 26 Edit History
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This issue could not be reproduced with the aarch64 build from 13th of February (prior to the patch), on Lenovo Yoga ARM device. I have downloaded the Nightly aarch64 installer build from: http://archive.mozilla.org/pub/firefox/nightly/2019/02/2019-02-13-21-34-09-mozilla-central/ I have installed it without giving it the admin privileges (which means it got installed by default in the user/AppData/Local folder) and then I have modified the value of the "security.sandbox.content.level"pref to 5 and restarted the browser. After the browser restarted with the same (older/affected) build version, all and any page that I have attempted to access loaded correctly. Considering that I could not reproduce this issue, I cannot verify the fix. Am I doing something wrong?