USB Audio Adapter for headphones does not work after upgrade to e/OS 3.2

• /e/OS version: 3.2-a15-20251022539003-official-FP5
• Device model(s): FP5
• Impacted Application: ~
• Affected application/URL:
• Browser/client and version:

The problem

Since I did the upgrade to e/OS 3.2 wit AOSP15 included, no USB-C headphone adapter with 3.5 mm jack is working. I tried two different models which have been working fine before the upgrade. Two FP5 are impacted here in the family with exactly the same behavior.

It appears since the update has been done

Technical details

Information: USB audiorouting has not been deactivated in the developer options.

The play/pause switch on the headphones is working. But the audio output does not.