There are 3 major bugs reported by more people than just my teammate and I since 5.6 -- and a gamebreaking one introduced in 5.6 beta. All not fixed in 5.6 final 1. Pressing the Play button while in the editor simply does nothing until restart: You cannot play until you restart Unity. This combines miserably with bug #2 as a "combo bug". http://recordit.co/Toai8OviNP (Screencast) 2. Collab services block threads for 1.5 to 2 minutes on a powerful PC every time Unity starts up: Combined with Bug #1 where you're forced to restart, this is quite the headache: 3. Disappearing UI in the editor: Move or toggle something to make it show again. Not too bad, but happens often enough to cause hair pulling http://recordit.co/MonGQLoSQo (Screencast) 4. [Last tested on 5.6f1, anyone try this on 5.6f3?] FB SDK standalone broke in 5.6 on Unity's side when compiled: Not here since 5.5 (worked in 5.5), but broken since 5.6 introduced FB GameTown or whatever it's called (FB's target build). Whenever you use FB standalone, it works in the editor - but not when built: When compiled (exe), it'll say FB's GameTown(?) is not found as if I compiled it from there instead of running standalone. This means all devs with FB integration are at the mercy of Unity until it's fixed (we're one of them /cry) and have to tell customers our advertised features don't work anymore. 5. [New] One thing major I forgot about: Vulkan crashes 50% of users on same project. It's reporting to crash 50% of the people that run it -- it'll either work amazing or not work at all, crashing instantly at the start. For me, it works great! For my teammate running the same project, it doesn't work at all. For about 20 out of 40 closed alpha testers, they report crashing instantly. The others report a great success. Please don't let this be like UNET where you just dump a new feature, then say "We're done!", and move on after all these error reports. This is another reason why 5.6f3 should not have been called final for a feature so early in testing ~ _______________________________________________________ #1, #2, and #3 are just headache bugs, but when you're working 10hrs/day, it gets pretty stressful, like a mosquito constantly flying around your head -- esp since it was reported back in 5.5 beta and still not fixed in 5.6 final As for #4, this is pretty gamebreaking rather than just a headache -- esp. since it was introduced in 5.6 beta, hoping to see a patch fix this. Please fix bugs before adding features <3 A patch would be lovely.