gtk3 issue macOS: gtk3 3.24.36 changed determining system display profile over gtk3 3.24.34 (#5579) · Issues · GNOME / gtk · GitLab is fixed.
see current OSX Build - #619 by MStraeten for builds with patched gtk3 3.24.36
keep in mind: now you need to select ‘system display profile’ to get a proper color managed view