There are some who have reported that the latest update took away the glow effects of using the numbers pad in the Samsung calculator. Try toggling off the color palette in the Wallpaper and style in the settings app.. then check.
EDIT: the glow effect is also affected if a theme park created theme is applied (at least form my experiences).
Alright so I can also confirm that these effects do not work with a theme applied. However I removed my theme and said effects do work. I rather like my theme so I'm with others in hoping Samsung introduces a fix to this.
