What are my next options.
I chose to return it to Microsoft (replacing it with a Thinkpad X1 Carbon that was massively discounted for Black Friday). The CS rep indicated that original sales through MS were eligible for return until January 31 2020, but I'm not sure that's accurate
or applies if you bought it elsewhere.
This is an absolutely critical issue, and it's not worth waiting for them to issue a fix (if there even is one) when you risk losing work on the daily. I had to completely restructure my workflow in order to minimize the risk, which created big bottlenecks
and slowed things down. I'm quite surprised that they haven't acknowledged or fixed an issue this significant for more than a month and a half after launch.
This was my first surface product, and the product's design was incredible for the price. I was sorry to give it up, but not sad to see it go.