https://bugs.kde.org/show_bug.cgi?id=279115
--- Comment #11 from Jan <medhe...@web.de> --- I figured out why this is happening: KMail only considers prefixed E-Mails for subject based threading. If it doesn't start with a "Re:" for example, it's not a thread. Bugzilla doesn't do that. So in the absence of that, it only uses In-Reply-To/Reference headers. And that doesn't work if the thread starter is missing, which imho is the wrong way to handle that. And even if it is prefixed, it will not consider messages with a time difference of 120 seconds. So if you managed to have a github conversation that is faster than that, it's not a thread either. This one in particular I really don't understand. -- You are receiving this mail because: You are watching all bug changes.