Tested with: Device: Samsung S5 (Android 4.4.2) Build: Firefox for Android 43.0a1 (2015-09-02) Steps to reproduce: 1. Open a few tabs 2. Open Tab Tray 3. Tap on a tab and swipe down 4. Repeat step 3 for the other tabs Expected results: - Nothing should happen. Actual results: - All tabs that are swiped down, are selected in tab tray. Note: - please look at the following video: https://www.youtube.com/watch?v=9Pjo5iZl5QU&feature=youtu.be

Regression window: http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=be81b8d6fae9&tochange=0b2f5e8b7be5 Regressed from Bug 1017338 - Swipe to close a tab from tab panel

Not sure how critical this bug is, but 41 is going to release soon.

Note: can't reproduce on android 5

Seems to be a platform issue: https://code.google.com/p/android/issues/detail?id=29423 The last comment on this bug states it was resolved in November 2014 which matches up with the release of Android 5. Still looking for a fix!

I was also able to reproduce the issue on LG Nexus 4 (Android 5.1) on both normal and private browsing.

I can reproduce this too

STR: New the new tabs tray layout you can swipe down on a thumbnail. Nothing happens (it won't close the tab), but if you do it enough on a few different thumbnails, you'll get into a state where the thumbnails don't get "unselected".

This doesn't need to track for a release, but this looks bad, so we should try to fix it. Martyn, do you know what would be involved in fixing this? Could it be a mentor bug?

I can reproduce this with multitouch. I can even close tabs just by touching multiple tabs: https://youtu.be/S8qMmCY_RJE Set to block "tabs-tray-v3".

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.