Yesterday we ran in an issue that our students weren't able to take the final exam.
After contacting support we've learned that this is due to the fact that starting from 2 weeks ago course feedback needs to be done before the exam.
We were quite lucky that this was an optional subject exam. If this would have happened in a mandatory subject this could have had legal consequences due to the fact that students wouldn't have had enough time for the exam after waiting for the answer of support and filling out the course feedback.

I wasn't able to find any place where this change would have been announced. But even it was announced it was not announced in a good way.

Please inform about such changes in advance!