https://www.bleepingcomputer.com/news/microsoft/windows-10-insider-preview-build-18346-released-with-bug-fixes/

Microsoft has released Windows 10 Insider Preview Build 18346 (19H1) to Insiders in the Fast ring. This release is a maintenance build only that resolves numerous bugs, but does not add any new features.

If you are a Windows Insider in the Fast ring, you can update to Windows 10 Insider Preview Build 18346 by going into Settings -> Update & Security -> Windows Update and then checking for new updates.