In part the problem, or so I've been told, was caused by the EFRA not testing the cels through sufficient cycles to capture any cels that would expand too much. As a result cels that were manufactured to too tight tolerances passed the test where they probably should not have.
In the Netherlands the national organization has, for this year, decided to allow all cels on the homologation list even if, after repeated use, they happen to exceed the size limitations. Hopefully EFRA will improve the tests for next year and the manufacturors will ensure their cels will remain within limits also after many repeat charges in future.
However until that time I think some leniency is required at national level and lower levels.
BTW, Reto thanks, now I know of two manufacturors that truly met the limits posed by EFRA.