Current Android mochitests use a different method (push to device profile, side-load) for installing addons (like special-powers) than that used for desktop mochitests (marionette). We should be able to simplify/consolidate code if marionette is used everywhere. The Android method is inherently racy -- see https://bugzilla.mozilla.org/show_bug.cgi?id=1494657#c31 and https://bugzilla.mozilla.org/show_bug.cgi?id=1451484#c29. Are there similar issues for Android reftests? Can we use marionette in geckoview apps like TestRunnerActivity?

(In reply to Geoff Brown [:gbrown] from comment #0) > Can we use marionette in geckoview apps like TestRunnerActivity? Not currently, but we are trying to get that working -- bug 1496773. Chris Peterson recently asserted that Fenix will not be marionette-capable. So we should probably maintain the existing non-marionette support for the foreseeable future, but use marionette wherever we can.

There's a similar issue for robocop -- it would be nice to include robocop in any solution here (it should be natural and easy, since robocop uses the mochitest framework).

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.