Thread name not displayed in logs

Given the following code from the tutorial, the thread name should be displayed in the logs:

in_thread(name: :bass) do
  loop do
    use_synth :prophet
    play chord(:e2, :m7).choose, release: 0.6
    sleep 0.5
  end
end

in_thread(name: :drums) do
  loop do
    sample :elec_snare
    sleep 1
  end
endCopy

Unfortunately I cannot see it:

$ sonic-pi-tool logs
[Run 1, Time 19.5]
 └ synth :prophet, {note: 50.0, release: 0.6}

[Run 1, Time 20.0]
 └ sample "/Applications/Sonic Pi.app/Contents/Resources/etc/samples",
           "elec_snare.flac"

[Run 1, Time 20.0]
 └ synth :prophet, {note: 43.0, release: 0.6}

[Run 1, Time 20.5]
 └ synth :prophet, {note: 50.0, release: 0.6}
...

If I run the same code in Sonic Pi, the thread name is well displayed:

=> Starting run 0

=> Loaded sample "/Applications/Sonic Pi.app/Contents/Resources/etc/samples/elec_snare.flac"

{run: 0, time: 0.0}
 └─ sample "/Applications/Sonic Pi.app/Contents/Resources/etc/samples",
             "elec_snare.flac"
 
{run: 0, time: 0.0, thread: :bass}
 └─ synth :prophet, {note: 50.0, release: 0.6}
 
{run: 0, time: 0.5, thread: :bass}
 └─ synth :prophet, {note: 40.0, release: 0.6}
 
{run: 0, time: 1.0, thread: :bass}
 └─ synth :prophet, {note: 47.0, release: 0.6}
...

Start at the sonic-pi-tool logs command and trace how log entries are formatted, comparing its output with the Sonic Pi output shown in the issue. Done means log entries generated by named threads include the thread name, while unnamed entries retain their existing format.