We found a first bug in FET-6.0.0 - crash when viewing teachers after teachers import from CSV in the mornings-afternoons mode (reported by Khineche Kaddour). I fixed it in the latest snapshot: https://lalescu.ro/liviu/fet/download/test/
I must wait with the release at least a few days. Maybe I'll release FET-6.0.1 this Friday or Saturday, about a week after the 6.0.0 release.