Told the devs about it. They will reply you in the bugs tracker. Thanks for reporting it!

holch wrote: The developers do not check every post in the forum.

That's why it makes no longer sense to post here first. First open a bugticket and than a forum post Saves time and indicated issues around GUI/understanding if the bugticket was just a misunderstanding.

The issue around the default sessionname is known for years. It was seen as the job of the webmaster to setup names. Many php applications are generating session names to prevent issues around multi-installations / shared webhosting. It's one more bulletpoint on the checklist to use LimeSurvey productive (like deactivate AJAXmode etc.)

www.limesurvey.org/forum/development/113...-default-sessionname

It might will be changed in this effort: bugs.limesurvey.org/view.php?id=14621#c51047

I make a pull request (when ready) for new install (in 4.0) : bugs.limesurvey.org/view.php?id=14772