usb audio output disconnected and reconnected - not observing unmute ALSA control (-U)

[NotCommonUser]

Hi!
I have squeezelite running with following command line:
/usr/local/bin/squeezelite -n "piCorePlayer" -o hw:CARD=M60,DEV=0 -a 80:4::0: -r 96000 -v -C 5 -U "PCM" -v
The USB audio connected to rather new Edifier M60 speakers (these sadly support only 48000 and 96000 bitrates so standard CD rips need to be resampled :-( ),

Now as you see i am using -U "PCM" to get volume to maximum. When USB is disconnected and reconnected during playback, or is disconnected during startup and connected later then -U "PCM" is not respected at all.
Is this a bug? Is there workaround for the issue?

In the case of these speakers this is bit annoying as switching to bluetooth, f.e. to listen for a moment from mobile phone, results in disconnection of USB. Then volume drops and squeezelite needs to be restarted.

Kind regards
Chris

P.S. Card info is as follows

cat /proc/asound/card1/stream0
bestechnic EDIFIER M60 at usb-0000:01:00.0-1.4, full speed : USB Audio

Playback:
  Status: Running
    Interface = 1
    Altset = 2
    Packet Size = 432
    Momentary freq = 48000 Hz (0x30.0000)
  Interface 1
    Altset 1
    Format: S16_LE
    Channels: 2
    Endpoint: 0x03 (3 OUT) (SYNC)
    Rates: 48000, 96000
    Bits: 16
    Channel map: FL FR
  Interface 1
    Altset 2
    Format: S24_3LE
    Channels: 2
    Endpoint: 0x03 (3 OUT) (SYNC)
    Rates: 48000, 96000
    Bits: 24
    Channel map: FL FR

[NotCommonUser]

Please close it.
It is working properly in the context of piCorePlayer 10.
Chris