Because no one from Xamarin comments on anything. From the start they needed different people running the company, just my opinion based on my experience with Xamarin since day 1.
It's been the same old story for years John. A few years ago I was doing an app for a client. They requested a quick change so I fired up Xamarin Studio (at that time) and had updates. The build broke of course. Several hours later of uninstalling, reinstalling, configuring, etc. and I finally was able to sit down and make the client changes.
Needless to say they were not happy so I didn't charge them. I lost so much time fixing Xamarin. And because I work for myself time is money. Xamarin has cost me thousands of dollars over the years in lost time. I converted all but two of my projects to Obj-C/Java and now use Xcode/Android Studio. Of course all that converting was done on my time because I can't charge my clients for Xamarin's inaptitude.
This post pretty much sums up Xamarin:
I used to accuse the Xamarin team of never testing their updates, and it's been proven over and over again that they don't. Is it bad leadership? Unskilled employees? Is the codebase so unstable that any change breaks everything?
Nothing is new news to Xamarin. I think for the past 6-8 months they have been in a holding pattern waiting to see what Microsoft does. I kind of feel bad for them, but they are the ones who sold out.
I often recommend that developers just use Xcode/Swift (or Obj-C if that's your thing) and forget about Xamarin. They don't fix anything, and when they do release an update it breaks something else. And then there is always the threat of Apple changing something and then Xamarin breaks all together.
I thought Visual Studio for Mac was going to be great, until I installed it and find out it's Xamarin Studio with the word "Xamarin" replaced by "Visual".
I love C# and can write apps twice as fast as I can in Swift/Obj-C, but there are days when I wonder if all these headache are worth it.
Anyway, don't use the designer in Xamarin, just use Interface Builder to created/edit your storyboards and xib's.