It's nice that now you can resize launcher icon size to min of 8 pxl, but the change hasn't been reflected on the slider value in Appearance applet. If you have set the launcher icon size smaller than 32 pxl eg through dconf, it will always get reset to 32 pxl every time you open the applet
Hope this is just a minor oversight and will get fixed soon.
It's nice that now you can resize launcher icon size to min of 8 pxl, but the change hasn't been reflected on the slider value in Appearance applet. If you have set the launcher icon size smaller than 32 pxl eg through dconf, it will always get reset to 32 pxl every time you open the applet
Hope this is just a minor oversight and will get fixed soon.