Headphones aren't seen as mic input on initial launch

So @SHiLLySiT was kind enough to make an app to help me "master" my Pulp song volumes specifically for the Playdate speaker, without having to go back and forth and sideload every time a small change was made.

While using this though, I found some strange behavior in the way the Playdate detects a microphone being plugged in. I'm not sure the best way to describe it, so here's a video of me going over what is happening: Audio recording via aux cable on Playdate - YouTube

I can confirm it's not just the app that I'm using, because this behavior is the same in the System Settings "Input Test" page.

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Here's the source for that app, in case its helpful for debuggin'!

import("CoreLibs/graphics")
import("CoreLibs/easing")

local buffer = playdate.sound.sample.new(120, playdate.sound.kFormat16bitMono)
local source = playdate.sound.sampleplayer.new(buffer)
local lastSample = {}
local isRecording = false

local gain = 0.0
local effect = playdate.sound.overdrive.new()
effect:setMix(1)
effect:setGain(1)
playdate.sound.addEffect(effect)

playdate.sound.getHeadphoneState(function() 
  if playdate.isSimulator then
    playdate.sound.setOutputsActive(true, true)
  else
    playdate.sound.setOutputsActive(false, true)
  end
end)

function onComplete(sample)
  lastSample = sample
  playdate.sound.micinput.stopListening()
  isRecording = false
end

function playdate.update()
  if playdate.buttonJustPressed("a") then
    if isRecording then
      playdate.sound.micinput.stopListening()
      playdate.sound.micinput.stopRecording()
      isRecording = false
    else
      playdate.sound.micinput.startListening()
      playdate.sound.micinput.recordToSample(buffer, onComplete)
      isRecording = true
    end
  end

  if playdate.buttonJustPressed("b") then
    if source:isPlaying() then
      source:stop()
    else
      source:play(0)
    end
  end

  local crankChange = playdate.getCrankChange()
  if crankChange ~= 0 then
    gain = math.max(1, gain + crankChange / 100)
    effect:setGain(gain)
  end

  local micLevel = playdate.sound.micinput.getLevel()
  micLevel = playdate.easingFunctions.outQuart(micLevel, 0, 1, 1) 
  playdate.graphics.clear()
  playdate.graphics.drawText("‚í∂recording: "..tostring(isRecording), 0, 0)
  playdate.graphics.drawText("mic activity:", 0, 17)
  playdate.graphics.drawRect(90, 17, 50, 16)
  playdate.graphics.fillRect(90, 17, 50 * micLevel, 16)
  playdate.graphics.drawText("mic source: "..playdate.sound.micinput.getSource(), 0, 34)
  playdate.graphics.drawText("‚í∑playback: "..tostring(source:isPlaying()), 0, 50)
  playdate.graphics.drawText("ūüé£gain: "..gain, 0, 66)
end
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