When converting a list to string for show-text, since
05c398fb6c the OSD_ASS_0 escape hatch
is used. This usage is problematic because the same format string is
used for print-text, which results in these ASS escape sequences
being printed in the terminal.
Also since d6610a5b2f, the print-text
output to console.lua is no longer escaped if OSD_ASS_0 is present.
This results in abnormally formated text in the console output.
Fix this by not using ASS escape sequences for this. Instead, use the
circle symbols used by the OSC, which also results in the same width
for active and inactive items.
14462dafe4