System audio leaking into ext mic

[Neptune3013]

Describe the bug
Any audio played in the system is routed into the external mic of headset connected via 3.5mm jack.

To Reproduce
Connect Headset.
Set profile to Play HIFI quality Music (HDMI1, HDMI2. HDMI3. Headphones. Mic1, Mic2). (This is automatic)
Laptop in-built mic is detected as "Raptor Lake P/U/H cAVS Digital microphone"
whereas the headset's mic is detected in "Raptor Lake P/U/H cAVS Stereo microphone"
Set stereo mic as default input mic in pavucontrol.
Play any audio (music/video etc).

Reproduction Rate
9/10.
The volume of the audio is variable.
Note: Switching to Pro Audio profile results in no playback being heard on the headset.

Expected behavior
System playback should not be heard by applications receiving input from the headset's mic.

Impact
System playback leaking into applications Like Vesktop or the browser (Input device selected as RPL Stereo Mic)
PS: I am unable to detect any audio routing issues in OBS Studio.

Environment
Kernel: 7.0.10-2-cachyos (64-bit)
sof-firmware version: 2025.12.2-1
Topology: ABI 3:22:1 Kernel ABI 3:23:1
CPU: 12 × 13th Gen Intel® Core™ i5-13420H

Screenshots or console output

sudo sof-logger -t -l /usr/lib/firmware/intel/sof/sof-rpl.ldc returned error: Unable to open in file /sys/kernel/debug/sof/trace: No such file or directory

Docs suggest "on distribution kernels sof_debug=1 module option for snd_sof might be needed if the /sys/kernel/debug/sof/trace file is not present" but I have no idea how to do that.

dmesg seems fine

6.965912] intel_tcc_cooling: Programmable TCC Offset detected
[    6.965918] hid-multitouch 0018:093A:3848.0005: input,hidraw4: I2C HID v1.00 Mouse [PIXA3848:00 093A:3848] on i2c-PIXA3848:00
[    6.976890] input: HDA NVidia HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:06.0/0000:01:00.1/sound/card0/input19
[    6.977188] input: HDA NVidia HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:06.0/0000:01:00.1/sound/card0/input20
[    6.977217] input: HDA NVidia HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:06.0/0000:01:00.1/sound/card0/input21
[    6.977249] input: HDA NVidia HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:06.0/0000:01:00.1/sound/card0/input22
[    6.988169] usbcore: registered new interface driver uvcvideo
[    7.035456] mt7921e 0000:3e:00.0: HW/SW Version: 0x8a108a10, Build Time: 20260224110909a
[    7.039050] Bluetooth: hci0: Device setup in 145946 usecs
[    7.039074] Bluetooth: hci0: HCI Enhanced Setup Synchronous Connection command is advertised, but not supported.
[    7.046748] mt7921e 0000:3e:00.0: WM Firmware Version: ____010000, Build Time: 20260224110949
[    7.081444] sof-audio-pci-intel-tgl 0000:00:1f.3: enabling device (0000 -> 0002)
[    7.081766] sof-audio-pci-intel-tgl 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if 0x040100
[    7.081838] sof-audio-pci-intel-tgl 0000:00:1f.3: bound 0000:00:02.0 (ops intel_audio_component_bind_ops [i915])
[    7.088726] sof-audio-pci-intel-tgl 0000:00:1f.3: use msi interrupt mode
[    7.110628] Bluetooth: hci0: AOSP extensions version v1.00
[    7.110635] Bluetooth: hci0: AOSP quality report is supported
[    7.139936] sof-audio-pci-intel-tgl 0000:00:1f.3: hda codecs found, mask 5
[    7.139943] sof-audio-pci-intel-tgl 0000:00:1f.3: using HDA machine driver skl_hda_dsp_generic now
[    7.139946] sof-audio-pci-intel-tgl 0000:00:1f.3: BT link detected in NHLT tables: 0x0
[    7.139949] sof-audio-pci-intel-tgl 0000:00:1f.3: DMICs detected in NHLT tables: 2
[    7.144938] sof-audio-pci-intel-tgl 0000:00:1f.3: Firmware paths/files for ipc type 0:
[    7.144944] sof-audio-pci-intel-tgl 0000:00:1f.3:  Firmware file:     intel/sof/sof-rpl.ri
[    7.144946] sof-audio-pci-intel-tgl 0000:00:1f.3:  Topology file:     intel/sof-tplg/sof-hda-generic-2ch.tplg
[    7.145658] sof-audio-pci-intel-tgl 0000:00:1f.3: Firmware info: version 2:2:0-57864
[    7.145662] sof-audio-pci-intel-tgl 0000:00:1f.3: Firmware: ABI 3:22:1 Kernel ABI 3:23:1
[    7.239362] sof-audio-pci-intel-tgl 0000:00:1f.3: Firmware info: version 2:2:0-57864
[    7.239371] sof-audio-pci-intel-tgl 0000:00:1f.3: Firmware: ABI 3:22:1 Kernel ABI 3:23:1
[    7.257843] sof-audio-pci-intel-tgl 0000:00:1f.3: loading topology: intel/sof-tplg/sof-hda-generic-2ch.tplg
[    7.257985] sof-audio-pci-intel-tgl 0000:00:1f.3: Topology: ABI 3:22:1 Kernel ABI 3:23:1
[    7.258427] skl_hda_dsp_generic skl_hda_dsp_generic: ASoC: Parent card not yet available, widget card binding deferred
[    7.262912] ntfs3: Enabled Linux POSIX ACLs support
[    7.262915] ntfs3: Read-only LZX/Xpress compression included
[    7.275075] systemd-journald[352]: Received client request to flush runtime journal.

qpwgraph pipewire graph:

No monitor of mic has been looped in.

PS: Issue not present on Windows and similar issue can be reproduced with other headsets.