Unfortunately, encryption never was quite as robust as the rest of ZFS. That said, things have become much better in the past year, as there have been targetted

Unfortunately, encryption never was quite as robust as the rest of ZFS. That said, things have become much better in the past year, as there have been targetted efforts focused on improving it, which found and fixed multiple bugs. That said, most of the developers are likely not using it on their own systems, which probably allowed bugs to stick around abnormally long compared to the rest of the code base (although some really ancient bugs were found last year in other areas).