SysmoOCTSIM enumeration issues

Hello, In reference to this bug: https://osmocom.org/issues/5310 I am also experiencing this on two different platforms, Pi4 and an Intel NUC x86. I have two OCTSIMs but I can reproduce with one only and with only USB connected. All SIM slots are populated. Upon power cycle of the host system, the OCTSIM is unable to enumerate. If I unplug the USB cable and replug, it sometimes enumerates. If it doesn't, I move to another USB port and sometime it works. I also tried upgrading the firmware on one board from 0.2.61-2a78 to 0.2.78-62e1 but the problem remains. Log below shows enumeration errors after which I unplugged the cables and replugged. Please advise as we cannot build a product around a device that cannot enumerate reliably. [ 308.083438] usb 1-1: new full-speed USB device number 5 using xhci_hcd [ 308.211478] usb 1-1: device descriptor read/64, error -71 [ 308.447471] usb 1-1: device descriptor read/64, error -71 [ 308.683426] usb 1-1: new full-speed USB device number 6 using xhci_hcd [ 308.811460] usb 1-1: device descriptor read/64, error -71 [ 309.047456] usb 1-1: device descriptor read/64, error -71 [ 309.155542] usb usb1-port1: attempt power cycle [ 309.567390] usb 1-1: new full-speed USB device number 7 using xhci_hcd [ 309.567620] usb 1-1: Device not responding to setup address. [ 309.775623] usb 1-1: Device not responding to setup address. [ 309.983398] usb 1-1: device not accepting address 7, error -71 [ 310.111394] usb 1-1: new full-speed USB device number 8 using xhci_hcd [ 310.111628] usb 1-1: Device not responding to setup address. [ 310.319589] usb 1-1: Device not responding to setup address. [ 310.527383] usb 1-1: device not accepting address 8, error -71 [ 310.527534] usb usb1-port1: unable to enumerate USB device [ 349.237421] usb 1-2: USB disconnect, device number 3 [ 353.706345] usb 1-2: new full-speed USB device number 9 using xhci_hcd [ 353.856758] usb 1-2: New USB device found, idVendor=1d50, idProduct=6141, bcdDevice= 0.00 [ 353.856770] usb 1-2: New USB device strings: Mfr=1, Product=2, SerialNumber=7 [ 353.856776] usb 1-2: Product: sysmoOCTSIM 0.2.61-2a78 [ 353.856781] usb 1-2: Manufacturer: sysmocom - s.f.m.c. GmbH [ 353.856785] usb 1-2: SerialNumber: 6ebe976f3335355320202034432415ff [ 353.871733] cdc_acm 1-2:1.1: ttyACM0: USB ACM device [ 353.871776] usbcore: registered new interface driver cdc_acm [ 353.871779] cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters [ 373.317822] usb 1-1: new full-speed USB device number 10 using xhci_hcd [ 373.468141] usb 1-1: New USB device found, idVendor=1d50, idProduct=6141, bcdDevice= 0.00 [ 373.468154] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=7 [ 373.468160] usb 1-1: Product: sysmoOCTSIM 0.2.78-62e1 [ 373.468164] usb 1-1: Manufacturer: sysmocom - s.f.m.c. GmbH Thanks