The Xamarin.Android 220.127.116.11 hotfix update was just released for the Xamarin Stable stack.
Unfortunately this quite important hotfix update was released after the usual Friday virtual machine update provisioning and so it was left out from the weekly updates.
As the issue seems to affect a great number of Xamarin Android projects we decided to do the update right now, to not to wait until the weekend.
Related Xamarin update release notes: https://releases.xamarin.com/stable-release-15-2-2-xamarin-android-xamarin-vs-hotfix/
An important note: in order to push this update into production as soon as possible we decided to only update the Xamarin Stable stack, Xamarin Alpha & Beta stacks will be updated during the weekend as usual.
Special thanks to @tomcurran for reporting the issue and for helping us with the debugging!
Related report & discussion: