at this point, i dont think microsoft will fix it anymore...
you are wrong. Microsoft has fixed the Defrag Bug in Windows 10 Build 19551. The next update feature will be code name manganese.
So when we get that fix?
Join the Windows Insider Program. Dev Channel. (Formerly Fast Ring). Note: Not Recommended for General Users. because it's still unstable, Beta Software. I don't know the official release date of Feature Update in Windows 10 codename Manganese for General User (Non Windows Insider Program).
But why can´t they just release a small cumulative update? By the way when you run in cmd defrag -c -o -h -$ it defrags ssd and when you run defrag -c -o -h it trims ssd. It is just a wrong switch.