It looks fine to me Andrea: your 2.2 is 100% and your 2.3 has one missing string: 2.3 [course:isincompletionreports,core_role], introduced the 18th of October.
Don't forget that changes can take up to 3 hours before showing up in the stats.
Thanks for checking Koen. I'm happy to know I was able to get rid of the two missing string using the trick. Although I'm aware of the delay form commit to availability in the lang pack, I probably checked too early anyway.