Grease Pencil - Toolbar Eyedropper behaviour

In Draw mode the Eyedropper shows two modes in the topbar: Material and Palette. With Material mode selected it has the following functionality.

Eyedropper creates a new material by:

• Left click to sample stroke color
• CTRL-Left click to sample FILL color
• SHIFT-CTRL-Left click to sample Stroke andf Fill color

This makes sense considering the workflow/rendering pipeline for Material mode.

I note that when the Eyedropper is selected the sidebar Tool tab does not show the Color and palette panel.

With Palette mode selected nothing seems to happen when I left or right click.

Note sure if this is unimplemented functionality or a bug. Logic suggests that in this mode rather than creating a new material Left click samples the Stroke color, CTRL click Fill color, and SHIFT CTRL click samples both Stroke and Fill. In Palette Eyedropper mode the Color/Palette panel would be visible in the sidebar and would reflect the sampled colors.