smart card (yubikey ) lock every 60 seconds

Hello, we have some strange problem after upgrade to win 11 24h2. When we connect to remote destop using password everything is ok but when we use first time yubikey it works fine to but when we close remote desktop connection using "X" close button and connect again to this session then remote desktop i locking (WIN + L) every 60 secons. We are obsering this behavior only in office (LAN), when we connect via VPN everything is ok. Can You advise where is the problem ? When we use mstsc.exe with remoteguard switch then everything is ok even in office (LAN)