User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:52.0) Gecko/20100101 Firefox/52.0 Build ID: 20170124094647 Steps to reproduce: Open some tab's and close all of them till you have only one left. Now try to close this with the keyboard command [command]+[w]. Device: iPad Pro with iOS 10.3 Actual results: The tab don't close. Expected results: The tab should close and the about:newtab (or which site that is) should be opened with the big bookmark and history icons.
I'm able to reproduce this issue on an iPad Pro running iOS 9.3
Should be fixed! Feel free to reopen if it isnt. Testing on the latest master.
Verifying as fixed on latest master/beta