colorpicker - can't change hue before changing val/sat first

Not sure if it's an SDL2 dependent issue, but it is bugging me.

I can not change the hue before value/saturation is changed for some reason.

No file or test is named. Start by reproducing the colorpicker interaction described in the issue, checking whether the behavior depends on SDL2, then locate the colorpicker entry point and compare hue changes before and after value or saturation changes. Done means hue can be changed immediately and the behavior is covered by a reproducible test or documented verification.

Written by the indexing model from the issue text.