@Andrew it seems that the 3.7.2 pre-release works well. Thanks.
Alfred version: 3.7.1 build 946 Problem: In the latest version the font-weight is not System any more, making less readability in 1080p. It seems like the font-weight is forced in System Light and setting font-weight as System didn't work. The font of the 2 pic in setting is made as System in both 3.7.0 and 3.7.1 versions.