User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; WOW64; en-US; rv:1.9.3a5pre) Gecko/20100603 Firefox/3.7a4pre Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.1; WOW64; en-US; rv:1.9.3a5pre) Gecko/20100603 Firefox/3.7a4pre When launching Firefox with specifying user profile and "-no-remote" parameter (this process is called "Firefox-A") and launching Firefox with other profile and without "-no-remote" parameter(this process is called "Firefox-B"). If calling Firefox-A's jump lists command, Running command on Firefox-B's window. Reproducible: Always Steps to Reproduce: 1. Launching Firefox with specifying user profile and "-no-remote" parameter (this process is called "Firefox-A"). 2. Launching Firefox with another profile and without "-no-remote" parameter(this process is called "Firefox-B"). 3. Calling the command from Firefox-A's jump lists Actual Results: The commnad is run on Firefox-B's window. For example, if calling commmand of "open new tab" from Firefox-A, open new tab on Firefox-B's window. Expected Results: The commnad is run on Firefox-A's window. For example, if calling commmand of "open new tab" from Firefox-A, open new tab on Firefox-A's window.

When launching Firefox with specifying user profile and "-no-remote" parameter (this process is called "Firefox-A") but no other Firefox process, command from Firefox-A launchs new Firefox process with dafault profile.

This is related to bug 376216 which is wontfix. I suspect this edge case might be as well.

Overlaps with bug 577867