pfSense

I cannot reproduce the issue either.

I'll fire things up here in a little while and see if I can still replicate the issue.
There really wasn't much to it. Click the delete (trash can) icon and then click cancel on the are you sure popup dialog prompt. I've seen it every time without fail. Think maybe a page refresh/reload may have been involved. Don't recall for sure on that.

The cancel button works in Chrome. Group is not deleted.

The cancel button does not work in IE. After page refresh the group is gone.

IE 11
Windows 8.1 pro

Doesn't happen on Windows 8.1 and IE 11 here

Don't really know what to say... But I'll try...

Happens without fail here. Can reproduce every time at will.
System is pretty basic. I don't run a bunch of junk... addons, games, tool bars, etc. It's pretty vanilla system.
Besides, running in a "pinned" shortcut, so addons are not supposed to run anyway. (happens when not running in "pinned" shortcut too so that's not the issue).
Works fine on 2.2.6

I'm at a loss. What sorts of things would have impact on this?

Okay found a works/doesn't work data point. Make sure you are sitting down for this.

Clicking the trashcan with mouse (track pad) works.
Selecting the trashcan with touch or stylus does not work.

Seriously.

Disagree that it is not a bug. It works fine in 2.2.6 with touch or stylus.

It's not related to the method used for clicking the cancel button. That works either way as long as the trash can is not selected by touch or stylus. It's the trashcan selection method that causes it not to work.

Probably a pretty good possibility to be css related given it works fine in 2.2.6.

An inadvertent touch of the trashcan and the user group can be kissed good-by. No means of canceling. None recoverable.

Sorry but that is a bug. Whether anything is going to be done about it is your prerogative. But it is a bug nonetheless.

It is more widespread that just the group manager. It appears to be system wide. Just verified same behavior on firewall rules. So it is something to do with how the delete is being handled. Maybe jquery is involved.

We have no Windows devices with touch or stylus to try. IE's a small portion of the user base, and touch/stylus is a tiny fraction of that. Pull requests welcome, I'll gladly open it back up if someone finds and submits a fix. We can't fix something we can't replicate, and I don't think we care enough to buy a Windows touchscreen device.

Pull request submitted
https://github.com/pfsense/pfsense/pull/2685

thanks NYOB.