I have two customisable complications on my watch face, which both use the short text complication in watch face studio. When selecting Samsung Health Step Count as the source, the data displays correctly, however the steps icon does not show. I.e. here is how it looks in Studio (with my own default icon):
With the complication next appointment, the icon is also displayed incorrectly. In the WFS, the icon is displayed for short text, but not for long text. On the clock, the icon is displayed weakly for both. On the real clock, the icon is displayed even more weakly.
First image Watchface Studio and second image, screenshot from the watch.