This has to be trivially solvable in a backwards-compatible manner (at least if the library at fault is one of windows' own which they update with windows update). Win 8.1 is an OS they actively update.

So why isn't this just fixed in the next update?

It would be one thing if they had to research the problem, and presented a workaround in the meantime. But they appear to have found the cause! To me it seems it would take ten times longer to find this bug, than to fix it. Once they spent the effort to find it, why not patch it?