Unable to change hatch colour by modifying properties

I created a hatch but couldn't change its color.  Trying to modify its properties didn’t work.

Properties doesn't work at colour for hatches. You have to use Attributes.
But there is a strange bug. It first seems you have to do it twice to have an effect. But further testing showed the change happened but is not shown on the screen. If you save the drawing at this state, close and reopen it the hatch will show the new colour.
A quicker way is to make an Undo and then a Redo, and voila, you see the new colour.