A dark box/border is rendered around every menu item in the Activity Stream context menu (which uses the NavigationView). See the attached screenshot for an example. I can observe this on the Asus TF201T (a tablet), but it seems a variety of Asus devices might be affected: https://code.google.com/p/android/issues/detail?id=190498 (There are also 1-2 similar reports on SO, all on Asus devices.) Note: prior to Bug 1325375, the AS context menu isn't visible at all on Asus tablets. The same bug is visible if you hardcode ActivityStreamContextMenu to always use the BottomSheet menu (which also uses a NavigationView). The menu is functional, it simply looks bad. (Unfortunately the UI hierarchy viewer doesn't seem to be usable on the TF201T, so I can't debug in that way.)

All open Activity Stream bugs are moving from the whiteboard tag, "[mobileAS]", to the Firefox for Android component, "Activity Stream", so that I can keep better track of these bugs as the new triage owner; I will send out an email shortly with additional details, caveats, etc.

We have completed our launch of our new Firefox on Android. The development of the new versions use GitHub for issue tracking. If the bug report still reproduces in a current version of [Firefox on Android nightly](https://play.google.com/store/apps/details?id=org.mozilla.fenix) an issue can be reported at the [Fenix GitHub project](https://github.com/mozilla-mobile/fenix/). If you want to discuss your report please use [Mozilla's chat](https://wiki.mozilla.org/Matrix#Connect_to_Matrix) server https://chat.mozilla.org and join the [#fenix](https://chat.mozilla.org/#/room/#fenix:mozilla.org) channel.