Mouse.WarpCursorPosition() produces mouse delta on Linux but not on Windows?

I am using the mouse delta event from the new input system. But apparently there is a small but important difference as it behaves different on Linux and Windows, producing a mouse delta on the former, but not the latter. At least in my case or is this system dependent? It's pretty much default Windows 10 and Ubuntu though.
Is this also the reason why the mouse cursor is centered during cursor lock on Windows while it isn't on Linux?

Would be nice, if this could be mentioned somewhere like...

Mouse.WarpCursorPosition() produces mouse delta on Linux but not on Windows?