Spline Mappers Tiling can't be turned off

[Foxician]

Hi! The Tiling Mode settings of the Spline Mapper (both Grayscale and Color), aren't working for me.

It always acts as if set to H and V Tiling, even if I set to No Tiling, Horizontal Tiling or Vertical Tiling.

I expected it to work the same way as in the Spline Render (or any other node).

Here's an example where P1 and P3 of a spline are positioned beyond the 0-1 range:

 

What's also weird, is that the Spline (Poly Quadratic) switches its resolution to 2048x16 by itself in this setup and I can't change it to anything else.