scanner is detected wrong

Hello, I've upgraded my system to Leap 15.2 from 15.1 and my scanner cannot be used since then. It is a Mustek BearPaw 2400 CUPlus which is supported by Sane and I use it on OpenSUSE in the last 15 years w/o problems. Backend file is still on its place (I upgraded with zypped dup), scanner is visible with lsusb after system is booted up and it can be also seen in yast scanner section. It can be used to scan one page with xsane but after that it doesn't work anymore and says device is not available. It also cannot be listed with lsusb nor in yast modul. Can you please help what to check.