Try removing ajaxRendered="true".
It didn't help.
One thing I did that helped was to remove it from reRender of calling method.
I need to update the cordinates after I choose specfic place, so I call bean method and the activate Modal.show. (as I do with other components). Is there a problem when gmap element exists in reRendered area?
yes it's not allowed to reRender gmap because it has it's own initialization mechanism. so use gmapVar variable in order to made needed updates using gmap native api.