Not sure if this is a mod bug, or a Factorio bug... it appears that there is an issue with the way the floating text on a refill determines its origin point. The further toward the top/bottom of my screen an object is, the origin of the text is further offset from the actual object being refilled. This is pretty profound near the top/bottom of my screen.

Let me know if there's anything I can do to help debug this. I'm guessing it might have something to do with my ultra-wide resolution - 3440x1440?

I'm having the same issue and I have a rather normal resolution of 1900x600.

This should be fixed in 0.9.5. Apparently it was also related to a crash that would occur, as reported by another user. I'm really not sure what I was thinking regarding writing the code that caused this, so it's been "fixed."