fix thresholds not updating min and max when changing the data mode for fibers
fix thresholds not updating min and max when changing the data mode for fibers

mhough/braingl,TheProjecter/braingl,mhough/braingl,TheProjecter/braingl,braingl/braingl,braingl/braingl,mhough/braingl,TheProjecter/braingl,braingl/braingl