Originally Posted by williamsevenup

i find the search algos in non english language geos to be running on a different update schedule -

the point about backlinks is very possible - depends what and how much, but if it was agressive then that could certainly do something accross lots of different geos -

there have also been several major updates rolling out around meta titles - have seen this impact a shitton of queries with google basically ignoring the meta title and slipping in the h1 from the page which while being optimized for a keyword is not usually optimized for the SERPs as good as it could be -

lots of changes rolling out right now it seems - so first advice dont panick and try change too many things you gotta have some patience to see how it plays out