If I am right, that is pretty much the case. Feedback is good, though, and the question banks usually have a handle on the new exams within a fortnight or so. It also has to be said that in many subjects new questions are non-contentious, well validated, and within the syllabus. Not all, however.
There is another aspect. The syllabus EASA are currently using has been around since 2008/2009 and acknowledged by all as being less than perfect. There is a working group and an NPA for revised syllabi in all subjects, due to arrive maybe 2018/2019. One of the 'less than perfect' aspects of the old syllabi is that there are some really quite badly chosen and phrased objectives, these have been quietly ignored by those asking the questions for some time, and rightly so. I am told there is a newish EASA directive, however, that all the objectives in the old (and defective) syllabus must now be tested, hence the arrival of some really silly questions such as 'State which chapter of ICAO doc *** subject *** is referred to..." etc.