Oh Dear
VMWare really are taking the Microsoft approach to QA recently. At what point did they not test something as fundamental as deleting a snapshot...? Consolidating VMs is a cornerstone of VMWare and yet they managed to mess that up.
Last year ESX 6.0 was having CBT corruption issues too, rather than vendors, and I'm including all of them, even Linux Distros, pushing out shiny new features, they ought to put at least some effort into regression testing and basic functionality between versions.