I'm not sure where the new #Sys.ctl.1BC4B9C7# should show up, but where I expected it #Main.menu.EnlProBa# is used instead.
Just in case there is some issue that needs corrected, these three now seem to have a similar purpose:
#Sys.ctl.FE3F9D96# enlarge progress bar height
#Main.menu.EnlProBa# Enlarge Progress Bar
#Sys.ctl.1BC4B9C7# enlarge progress bar height