Center Map At Infowindow, Not At Route In Google Maps

My google map centers around a route, that is given by a Direction Service and rendered by a Direction Renderer (called directionsDisplay here). According to the docs and many thre

Solution 1:

I have found the error: gMaps did everything right; there was some css (in the theme of the cms i was using), that set some layer in the stack to overflow: hidden.

Thus, gMaps thought it had more space to show the infoWindow than it was acutally visible.