Last modified: 2013-02-12 05:55:11 UTC
When using markers with labels these labels are not taken into account when scaling the map (e.g. if you have one marker with labels and one without, the map will be centered on the second one and scaled all the way in) The reason is that markers with labels are added in a callback to mw.loader (jquery.googlemaps.js, line 110), so they are not added until after the map has been zoomed (line 460)
Have commited a possible fix: https://gerrit.wikimedia.org/r/26772