i think this is a bug. every time a patch is closed and reopened, the send symbol of the slider changes to $16, which requires a manual fix each time the patch is opened. i've isolated hte two sliders and they still exhibit the problem, perhaps this is a bug in pd.
roguesliders.pd:
#N canvas 253 58 299 107 12; #X obj 87 65 hsl 135 8 2 0.01 0 8.38861e+006 s2 s2 empty 93 7 193 12 -1 -241291 -24198 0 1; #X obj 87 46 hsl 135 8 2 0.01 0 8.38861e+006 s1 s1 empty 93 7 193 12 -1 -260818 -24198 0 1;
after open and save:
#N canvas 253 58 301 109 12; #X obj 87 65 hsl 135 8 2 0.01 0 8.38861e+006 $16 s2 empty 93 7 193 12 -1 -241291 -24198 0 1; #X obj 87 46 hsl 135 8 2 0.01 0 8.38861e+006 $16 s1 empty 93 7 193 12 -1 -260818 -24198 0 1;
besides the canvas being 2x2 pixels larger, the first symbolname has changed. definitely peculiar..