The Windows 10 May 2019 Update hasn't been without its issues. Luckily, Microsoft has a page dedicated to documenting them and their fixes. Yesterday evening, the page was updated to show three new issues that were resolved.
One of the most notable issues was that users that had a USB drive or memory card attached weren't able to upgrade to Windows 10 version 1903. This issue is fixed with this week's Patch Tuesday update. The cumulative update will be bundled into the upgrade package that you'll get from Windows Update.
Another issue that's been fixed is the loss of audio when using Dolby Atmos headphones or Dolby Atmos home theater. And finally, if you had a loss of functionality with the Dynabook Smartphone Link app, that should be fixed as well.
There are two known issues left on the list, one of which includes Windows Sandbox failing to start and the other is about display brightness not responding to adjustments. Microsoft says that it's investigating these issues. The Sandbox issue, however, should only occur when the OS language has been changed.