Looks to be a changelist on Master branch which fixes the issue here:
https://github.com/EpicGames/UnrealEngine/commit/4f48ef53ed646a22532e8e981f5515c94f303932
If you’re are on the source version (github) you can integrate that commit but if you are on the binary version (the launcher) you will have to wait till a hotfix is released I’m afraid.