Overview:
This is more a feature request than a bug, but I couldn't find a more suitable place.
I've recently found Latte, and it's great.
However, I have a long-standing preference that when I left-click on a group dock entry, rather than showing a list of windows, that the next task in that group should activate.
This was previously implemented in one of the KDE4 TMs, and I had been using dockbarx in plasma5 for this reason until finding Latte.

Presently, the functionality I desire can be assigned in the Settings to MiddleClick or Modifier Click (eg Shift + Left Click) as "Cycle Through Tasks".

For now I have fudged my local TaskDelegate.qml to permanently behave how I want with :
   if (mouse.button == Qt.LeftButton){ if (isGroupParent) { tasksWindows.activateNextTask(); } else { activateTask(); }}
...but I didn't succeed in assigning it to a config option to be able to submit a patch - sorry!

It would also be nice (but less important) if the Latte Plasmoid got this same option.
Thanks!