Tracking not working without sound

[Hamtubee]

Describe the bug
A clear and concise description of what's wrong.
I have noticed that the head tracking only starts working when you have a sound on.
To reproduce
Steps to reproduce, including the exact command (e.g. sony-head-tracker.exe bridge --port 4242).

1. Start sony head tracker as usual
2. connect ULT WEAR
3. Repair tracker

• no tracking

4. play sound (i used spotify)
5. now tracking works
6. Turn off sound - works normally
   Expected behaviour
   Tracking to work without having a sound first

Environment

• Windows version (e.g. Windows 11 23H2, build 22631):
  25H2
• Sony headset model and firmware version:
• ULT WEAR
• How paired (Windows Bluetooth settings / Sony app):
  Bluetooth
  Diagnostics
  Please attach relevant output. Helpful commands:
• sony-head-tracker.exe probe
• sony-head-tracker.exe dump --seconds 5
• The Discovery/permission log shown in the GUI details pane.

Additional context
Anything else that might help.