So the slider does not overlap the value label. Since the value label is allocated at the widget edge in gtk3, the correct fix here would probably be to remove the 12px padding we apply to the entire scale and instead apply it only to the trough.
77769a52b3 adwaita: Add some spacing to the scale value
gtk/gtkscale.c | 3 ++-
gtk/theme/Adwaita/_common.scss | 6 ++++++
gtk/theme/Adwaita/gtk-contained-dark.css | 8 ++++++++
gtk/theme/Adwaita/gtk-contained.css | 8 ++++++++
4 files changed, 24 insertions(+), 1 deletion(-)