your pulseaudio log did not show the sink port after you unplugged headphone
do pulseaudio change to line out , SPDIF or HDMI ?
( 38.730| 7.351) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now unplugged
( 38.730| 0.000) D: [pulseaudio] device-port.c: Setting port analog-output-headphones to status no
( 45.179| 6.448) I: [pulseaudio] main.c: Got signal SIGINT.
your pulseaudio log did not show the sink port after you unplugged headphone
do pulseaudio change to line out , SPDIF or HDMI ?
( 38.730| 7.351) D: [pulseaudio] module-alsa-card.c: Jack 'Front Headphone Jack' is now unplugged output- headphones to status no
( 38.730| 0.000) D: [pulseaudio] device-port.c: Setting port analog-
( 45.179| 6.448) I: [pulseaudio] main.c: Got signal SIGINT.