https://wccftech.com/windows-10-may-2019-update-list-of-bugs-and-upgrade-holds/

Windows 10 May 2019 Update was released to the public after quite a long wait. The wait seems to be working for the Windows maker since unlike the last two feature updates, version 1903 has (almost) managed to avoid any disastrous bugs. However, some small compatibility issues keep popping up.

Among other compatibility issues, Microsoft has also reported identifying a driver compatibility issue with certain Intel display drivers. “After updating to Window 10, version 1903, brightness settings may sometime appear as if changes applied took effect, yet the actual display brightness doesn’t change,” the company explains. While this may not look like a big issue to many users, Microsoft has decided to put an upgrade hold for some devices.