According to the following comment, this bug has also been reproduced on Arch Linux, which I don't believe has a similar patch lineage to Ubuntu:
https://bugs.launchpad.net/ubuntu/+source/firefox-3.0/+bug/428703/comments/19
If other non-ubuntu folks are experiencing this issue, please confirm here to get it documented.
According to the following comment, this bug has also been reproduced on Arch Linux, which I don't believe has a similar patch lineage to Ubuntu:
https:/ /bugs.launchpad .net/ubuntu/ +source/ firefox- 3.0/+bug/ 428703/ comments/ 19
If other non-ubuntu folks are experiencing this issue, please confirm here to get it documented.