If I use the colour picker to obtain a colour on my palette, and then use ALT+scroll wheel, the first (topmost and leftmost) colour of my palette is chosen rather than the next colour on my palette. This happens despite the fact that Aseprite correctly identifies the colour in the palette from the colour picking action.

This is very frustrating as this is the scenario where the ALT+scroll wheel feature would be the most useful. E.g. if I want to apply light/shadow to my pixelart, I would like to select the colour that's already there, and then go one or two colours up/down my ramp to get a brighter/darker colour to represent light/shadow.