This is not a duplicate. This bug was against xubuntu-default-settings, which didn't set the correct default image application handler. Bug #458148 is against thunderbird declaring itself able to open image file whereas it shouldn't.
** This bug is no longer a duplicate of bug 458148 Thunderbird and Sunbird claim to be able to open PNG , JPEG and GIF files -- double-clicked .jpg images are opening in mozilla thunderbird by default https://bugs.launchpad.net/bugs/432881 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
![[Bug 432881] Re: double-clicked .jpg images are opening in mozilla thunderbird by default](/search?l=ubuntu-bugs@lists.ubuntu.com&q=subject:%22%5C%5BBug+432881%5C%5D+Re%5C%3A+double%5C-clicked+.jpg+images+are+opening+in+mozilla%09thunderbird+by+default%22&o=newest){kind=link}
