If you can't see the third character, try selecting terminal on progress bar, it's possible you will see the third character then!
I couldn't see it because on my setup it was simply black and selecting added white background so I could see it. For me solution
was to set
progressbar_color = green:b
in ~/.ncmpcpp/config
Hope it help someone and it will spare "https://xkcd.com/979/" for next person looking for it:)
]]>section from my ncmpcpp config which does not work are
#progressbar_look = "─░─"
#progressbar_look = "─⊙╶"
progressbar_look = "◾◾◽"
all 3 of those don't work ( i un-comment them ofcourse , once at a time )
progressbar_look = "─|"
works fine.
Output of locale -a
C
POSIX
en_GB.utf8
terminator config
[global_config]
handle_size = 1
[keybindings]
[profiles]
[[default]]
use_system_font = False
cursor_shape = ibeam
foreground_color = "#00ff00"
show_titlebar = False
font = Ricty 10
cursor_blink = False
[layouts]
[[default]]
[[[child1]]]
type = Terminal
parent = window0
[[[window0]]]
type = Window
parent = ""
[plugins]