ProBuilder - Cube Face Selection behaves weird

Hi All,

Im very new to Unity and ProBuilder.
Im currently doing some beginner tutorial that shows how to create a wall using ProBuilder & ProGrids.

I created a cube object using ProBuilder, and want to duplicate it to create a wall using "Face Selection"
Yet, when im dragging either X/Y/Z instead of a duplication of the Cube in the next place on the grid, it is extended weirdly instead (See attached photos).
Additionally - weird errors are shown on console so I assume it relates to that.

What is the issue here?
Im doing step-by-step as in the tutorial yet instead of a duplication of the Cube when dragging using "Face Selection" that eventually creates a wall I get this weird strech and errors in console.

Thanks