I noticed this the other day. The Dock closes and reverts back to the Windows Taskbar after the screen goes to sleep and the lock screen becomes available. When I come back to my PC and wiggle the mouse the lock screen appears. I press [Enter] to get the login prompt then enter my credentials. The PC comes back to where it was when I left off but the Winstep menus don't show, only the Window Taskbar appears. It's set to "Lock the taskbar" and "Automatically hide the taskbar in desktop mode". Everything else is off. The taskbar is located at the bottom and it's set to "Always, hide labels".

Nexus-Ultimate.exe - 26.06.1256
WSUpdate.exe - 26.05.0223
Winstep.exe - 26.01.0135
WsxService.exe - 26.02.0144
WsxMMTimer.dll - 1.01.0015

This only started happening in the last few days. I'm running on a Thinkpad X1 (10) with Windows 10 Pro v10.0.19045 Build 19045. I never update Windows but I have Bitdefender and use ExpressVPN. I've rebooted my machine several times and have turned off the VPN. Still no luck.

Any ideas?

Not sure I understood what is actually happening?

After resume, is nexus.exe still running in Task Manager?

Also, if it started happening recently and the software did not change, what other recent changes did you make in your system?