https://arstechnica.com/gadgets/2018/11/latest-windows-10-update-breaks-windows-media-player-win32-apps-in-general/

The important data loss bug that interrupted the rollout of the Windows 10 October 2018 Update, version 1809, may be fixed, but it turns out there are plenty of other weird problems with the release.

As spotted by Paul Thurrott, the update also breaks the seek bar in Windows Media Player when playing "specific files."