Headless output goes black in recording if others are disabled

[alba4k]

steps to replicate:

• be on a single-minitor setup (e.g. eDP-1)
• hyprctl output create headless XYZ
• wf-recorder -o XYZ -f test.mp4
• hyprctl eval 'hl.monitor({output="eDP-1", disabled = true})'; sleep 3; hyprctl reload
• stop wf-recorder

the recording went black the moment eDP-1 was disabled and never recovered (not even after eDP-1 is waked by the reload, although I was recording the output XYZ

[IlyaP358]

Confirmed. The bug is completely real and persistent.
I reproduced it using standard hyprctl keyword monitor eDP-1,disable since I am still on the standard config.

Even if I explicitly try to push the active workspace onto the headless output using moveworkspacetomonitor before disabling eDP-1, the recording still turns completely black.

bug_hypr_test.mp4

The renderer loop for headless outputs seems to completely freeze as soon as the active physical monitor count drops to zero. I used a small bash script, if anyone needs it, here it is:

#!/bin/bash

hyprctl output create headless XYZ
wf-recorder -o XYZ -f /tmp/bug_hypr_test.mp4 &
WF_PID=$!

sleep 1

hyprctl keyword monitor eDP-1,disable
sleep 3

hyprctl keyword monitor eDP-1,preferred,auto,1
hyprctl reload
sleep 2

kill -2 $WF_PID
hyprctl output remove XYZ

echo "END TEST"