[QGIS-Developer] How to access advanced snapping configuration in QGIS master?

[Andreas Neumann]

Hi,

With current master I cannot find a way to access the "advanced snapping 
configuration" - the panel or dialogue that allow to set snapping 
settings for multiple layers at once.

There is a drop-down button labeled "Advanced configuration" - but 
nothing happens. No dialogue or panel opens.

Is this a bug or do I not understand how this works?

Thanks,

Andreas