Resolved Mouse autodrags to the right, when connecting dual monitors using ThinkPad Dock

[impermatom]

Hi there, and thank you in advance for your time!

Using a MacBook Pro (Big Sur 11.4), A ThinkPad Thunderbolt Dock, and a simple dongle Logitech mouse.

I've been using the same a dual monitor setup, wide Dell and MacBook Pro for 3 years.
This morning, when booting up, the mouse's position of the cursor keeps resetting to the right of the Dell screen.
I drag the mouse to the left and the position keeps changing.

I've tried:
1. Changing the mouse.
2. Using trackpad only.
3. Updating system.

It seems that it's not related to the external mouse at all.
All didn't resolve the problem.

I haven't tried
1. Replacing the type C cable, from dock to MacBook Pro.

For some reason, connecting to the dock is an issue now.
I don't understand why. Pisses me off immensely!

Any help on this would be great!

 

[impermatom]

RESOLVED UPDATE!

The reason was the Wacom tablet's pen, positioned comfortably on the connected but hidden from site, Wacom tablet.

Don't be silly kids, dock your Wacom's pen in the proper pen holder.