I started receiving a lot of crashes when re-opening Firefox Metro after closing it using the swipe gesture. Here some links to the crashes: https://crash-stats.mozilla.com/report/index/b14d99b6-2e81-41bf-82ef-2cca42130628 https://crash-stats.mozilla.com/report/index/f16b5556-c397-4d4f-a1e0-3f3b42130628 https://crash-stats.mozilla.com/report/index/068d3991-4298-4037-b0aa-7c7042130628 https://crash-stats.mozilla.com/report/index/37faff4c-a53e-4243-aecf-dc6032130628 Steps to reproduce the issue (not 100% reproducible): 1) Open Firefox Metro 2) Go to mozilla.org 3) Create a new tab using the "New Tab" overlay button and then close Firefox Metro by sliding it to the bottom of the screen 4) Wait a few minutes (1-2) and then re-open Firefox Metro Had it happen at least 10 times within the an hour when going through iteration #9 testing